7.13x+21.39=42.78

Solution for 7.13x+21.39=42.78 equation:

Simplifying
7.13x + 21.39 = 42.78

Reorder the terms:
21.39 + 7.13x = 42.78

Solving
21.39 + 7.13x = 42.78

Solving for variable 'x'.

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

Add '-21.39' to each side of the equation.
21.39 + -21.39 + 7.13x = 42.78 + -21.39

Combine like terms: 21.39 + -21.39 = 0.00
0.00 + 7.13x = 42.78 + -21.39
7.13x = 42.78 + -21.39

Combine like terms: 42.78 + -21.39 = 21.39
7.13x = 21.39

Divide each side by '7.13'.
x = 3

Simplifying
x = 3