Question

3 over 10 x = 13 - x How does this equal 10 ?

Answer 1

What do you mean 3 over 10x? You mean 10x/3=13-x ? can you rephrase it?

Answer 2

3 tenths x = 13 - x ?

Answer 3

im working it on paper one second.

Answer 4

10 is the answer because that's what my graphing calculator gave me. I'm trying to see how the answer became 10.

Answer 5

So using cross products
3x = 10 (13 -x)
3x = 130 - 10x
so 13x = 130
x = 10

Answer 6

Thanks!

Answer 7

wow good job, i did it wrong :P