Question

how many solutions does this equation have?
$11b + 7 - 8 = 11b - 1$
no solution
one solution
infinitely many solutions

Explanation:

Step1: Simplify left side constants

$11b + (7 - 8) = 11b - 1$
$11b - 1 = 11b - 1$

Step2: Subtract $11b$ from both sides

$11b - 1 - 11b = 11b - 1 - 11b$
$-1 = -1$

Answer:

infinitely many solutions