Question

ax+r=7, for x

Answer 1

You want to isolate the x:
ax+r=y
ax = y - r (subtract r from both sides)
x = (y - r)/a (divide by a)

Answer 2

oops I seemed to have put a y instead of a 7... but the parenthesis are important:
x = (7 - r)/a

Answer 3

whoopse
i made a mistake too

ax+r=7

subtract r

ax+r-r(crosses out)=7-r

divide a to solve for x

ax=7-r

ax/a 7-r/a

x=7-r/a

Answer 4

All you have to do is first of all subtract r from both sides.
ax = 7 - r...then finally divide both sides by a
x = (7 - r)/a

Answer 5

Thanks! At first I though it had something to do with slope intercept form and graphing.

Answer 6

haha nope

Answer 7

Anytime they ask to solve for a variable (like x) then what they are looking for is to get the expression in the form x = something