Answer:
Three consecutive numbers are x, x 1, and x + 2.
x + x + 1 + x + 2 = 126. Combine like terms
3x + 3 = 126 Subtract 3 from both sides to isolate x
3x + 3 - 3 = 126 - 3
3x = 123 Divide both sides by 3
3x/3 = 123/3
x = 41
x + 1 = 42
x + 2 = 43
41 + 42 + 43 = 126 for the check
