42=-7t

Solution for 42=-7t equation:

Simplifying
42 = -7t

Solving
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 = -7t + 7t

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

Add '-42' to each side of the equation.
42 + -42 + 7t = 0 + -42

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

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

Divide each side by '7'.
t = -6

Simplifying
t = -6