-7x-3(2x-1)=42

Solution for -7x-3(2x-1)=42 equation:

Simplifying
-7x + -3(2x + -1) = 42

Reorder the terms:
-7x + -3(-1 + 2x) = 42
-7x + (-1 * -3 + 2x * -3) = 42
-7x + (3 + -6x) = 42

Reorder the terms:
3 + -7x + -6x = 42

Combine like terms: -7x + -6x = -13x
3 + -13x = 42

Solving
3 + -13x = 42

Solving for variable 'x'.

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

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

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

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

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

Simplifying
x = -3