Question

Solve for x.

ax + b = r
O
b-r
X=
a
O
r-b
X=
a
b-a
X=
r
O
ar
X=
b

Answer 1

x = (r-b) /a

Explanation:

ax + b = r

Subtract b from each side

ax+b-b = r-b

ax = r-b

Divide each side by a

ax/a = ( r-b)/a

x = (r-b) /a