Question

If I have a square, and one side is 4x-11, and the other is x+7 what is x?

Answer 1

If it's a square, both sides are equal, therefore:
4x-11=x+7
then just solve for x

Answer 2

I know, but I dont know how, thats why I asked.

Answer 3

I think its 6.

Answer 4

that's correct

Answer 5

Move the lone x to the left and the -11 to the right. When you do that, they change sign, so:
4x-x=7+11 doing the operations:
3x=18 therefore
x=18/3 or x=6

Answer 6

\[4x-11=x+7\]
\[4x-11+11=x+7+11\]
\[4x=x+18\]
\[4x-x=x-x+18\]
\[x(4-1)=18\]
\[3x=18\]
\[x=\frac{18}{3}=6\]

Answer 7

Thank you.