-42.12=-7.8*t

Solution for -42.12=-7.8*t equation:

Simplifying
-42.12 = -7.8t

Solving
-42.12 = -7.8t

Solving for variable 't'.

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

Add '7.8t' to each side of the equation.
-42.12 + 7.8t = -7.8t + 7.8t

Combine like terms: -7.8t + 7.8t = 0.0
-42.12 + 7.8t = 0.0

Add '42.12' to each side of the equation.
-42.12 + 42.12 + 7.8t = 0.0 + 42.12

Combine like terms: -42.12 + 42.12 = 0.00
0.00 + 7.8t = 0.0 + 42.12
7.8t = 0.0 + 42.12

Combine like terms: 0.0 + 42.12 = 42.12
7.8t = 42.12

Divide each side by '7.8'.
t = 5.4

Simplifying
t = 5.4