Oh geez, I'm so bad at math I forgot how to do that even though it was less than 2 years ago I took business math class. I do know that the numbers have to be equal totals on each side of the equal sign. I just can't remember the steps to get there.
I've always been interested in math, but it's by far my worst subject.. I actually Googled this problem and we're certainly not alone in being confused.
The link just confused me more. I think the first step is to add 10 to both sides of the equal sign. I just wasn't sure where to add it on the f(x) side. I think it must be added to the (x) because aren't we trying to find f?
I could be totally wrong, too. Come on you math experts. Show us the steps.
My head starts to spin when I see all that math. My brain just doesn't work that way. Just like some people aren't good at art. Drawing is easy for me. I avoid math as much as possible.
I remember when I was in 3rd or 4th grade and they'd just started new math at my school and I came home with a math problem. One of our neighbors was an 8th grade teacher and couldn't figure it out. I got yelled for not paying attention in class, lol.
I have attention issues.. it takes me 3 or 4 times to go into the kitchen to get a drink of water because I get distracted and end up doing something else!
My daughter has taken pre-algebra, algebra, and geometry so far and she gets most of this but says she thinks something is missing to make the whole thing work. She has tried working this several different ways so far. This is a false statement, or no solution.
Could be the case. I have no idea how to solve something like this..
Quote:
Originally Posted by pk
My daughter has taken pre-algebra, algebra, and geometry so far and she gets most of this but says she thinks something is missing to make the whole thing work. She has tried working this several different ways so far. This is a false statement, or no solution.
My daughter has taken pre-algebra, algebra, and geometry so far and she gets most of this but says she thinks something is missing to make the whole thing work. She has tried working this several different ways so far. This is a false statement, or no solution.
That's what I was thinking, too. Because what I tried didn't work, but then again I suck at math.
oh yeah...as far as I am concerned, letters and numbers should not be mixed. lol
Exactly! I never had a use for algebra and most of us don't. I think of algebra as more like puzzles to solve, not true math.
At least I can understand why you would use word problems. That's like things you have to figure out in real life like when trying to make something for your house and so on.
nope, still doesn't make sense. If that is algebra, then it doesn't look like anything I've learned. It doesn't show what is added or subtracted to each side. How did f(7) replace f(x)? How did 7 get on the side by the 3? (on the first round).
I think some steps are missing here. Yes, I need each and every step spelled out, because my brain doesn't get math very well.
How do we know it's a 7? I don't remember "assigning" a number to a letter in algebra.
Quote:
f (7) = 3 X 7 - 10
3 X 7 =21
Now I see what you did here. I thought that line two was the answer to line one, but it was the first part of the math problem.
Quote:
f = 11
and the 7 mysteriously disappears on the last part...now I'm confused.
The way we did algebra in my business math class was to do the same thing to each side of the equal sign. If you added/subtracted a number to one side, you had to add/sub it to the other side.
This is kind of an example:
x + 79 = 194
x + 79 - 79 = 194 - 79
79 was subtracted from both sides of the equal sign here.
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