Answer:
(a-c)/b = x
Step-by-step explanation:
a = bx + c
subtract 'c' from each side to get:
(a-c) = bx
divide each side by 'b' to get:
(a-c)/b = x
To find the surface area of a rectangular prism or cube, you would do height*width*2+height*length*2+length*width*2.