The resulting expression for the variable x is (y-8b)/9m
Subject of formula is a way of representing a variable in terms of another variable.
Given the expression below;
y=9mx+8b
We are to make x the subject of the formula
Subtract 8b from both sides
y - 8b = 9mx + 8b - 8b
y - 8b = 9mx
Divide both sides by 9m to have:
(y-8b)/9m = 9mx/9m
(y-8b)/9m = x
Swap
x = (y-8b)/9m
Hence the resulting expression for the variable x is (y-8b)/9m
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