ax+b=0,a≠0

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Solution

This is a linear equation in one variable : x (assuming a and b to be constants)
So by subtracting b from both LHS and RHS,
ax + b - b = 0 - b,
Thus,
ax = -b,
Dividing both LHS and RHS by a,
ax/a = -b/a,
Thus,
x=-b/a …. is the value of x

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