42=13x+3

Solution for 42=13x+3 equation:

Simplifying
42 = 13x + 3

Reorder the terms:
42 = 3 + 13x

Solving
42 = 3 + 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
42 + -13x = 3 + 13x + -13x

Combine like terms: 13x + -13x = 0
42 + -13x = 3 + 0
42 + -13x = 3

Add '-42' to each side of the equation.
42 + -42 + -13x = 3 + -42

Combine like terms: 42 + -42 = 0
0 + -13x = 3 + -42
-13x = 3 + -42

Combine like terms: 3 + -42 = -39
-13x = -39

Divide each side by '-13'.
x = 3

Simplifying
x = 3