42=5n+2n

Solution for 42=5n+2n equation:

Simplifying
42 = 5n + 2n

Combine like terms: 5n + 2n = 7n
42 = 7n

Solving
42 = 7n

Solving for variable 'n'.

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

Add '-7n' to each side of the equation.
42 + -7n = 7n + -7n

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

Add '-42' to each side of the equation.
42 + -42 + -7n = 0 + -42

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

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

Divide each side by '-7'.
n = 6

Simplifying
n = 6