3t+42=-42+7t

Solution for 3t+42=-42+7t equation:

Simplifying
3t + 42 = -42 + 7t

Reorder the terms:
42 + 3t = -42 + 7t

Solving
42 + 3t = -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 + 3t + -7t = -42 + 7t + -7t

Combine like terms: 3t + -7t = -4t
42 + -4t = -42 + 7t + -7t

Combine like terms: 7t + -7t = 0
42 + -4t = -42 + 0
42 + -4t = -42

Add '-42' to each side of the equation.
42 + -42 + -4t = -42 + -42

Combine like terms: 42 + -42 = 0
0 + -4t = -42 + -42
-4t = -42 + -42

Combine like terms: -42 + -42 = -84
-4t = -84

Divide each side by '-4'.
t = 21

Simplifying
t = 21