42=7t-42

Solution for 42=7t-42 equation:

Simplifying
42 = 7t + -42

Reorder the terms:
42 = -42 + 7t

Solving
42 = -42 + 7t

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '-7t' to each side of the equation.
42 + -7t = -42 + 7t + -7t

Combine like terms: 7t + -7t = 0
42 + -7t = -42 + 0
42 + -7t = -42

Add '-42' to each side of the equation.
42 + -42 + -7t = -42 + -42

Combine like terms: 42 + -42 = 0
0 + -7t = -42 + -42
-7t = -42 + -42

Combine like terms: -42 + -42 = -84
-7t = -84

Divide each side by '-7'.
t = 12

Simplifying
t = 12