7x-(3x-6)=42

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Solution for 7x-(3x-6)=42 equation:


Simplifying
7x + -1(3x + -6) = 42

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

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

Combine like terms: 7x + -3x = 4x
6 + 4x = 42

Solving
6 + 4x = 42

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 4x = 42 + -6

Combine like terms: 6 + -6 = 0
0 + 4x = 42 + -6
4x = 42 + -6

Combine like terms: 42 + -6 = 36
4x = 36

Divide each side by '4'.
x = 9

Simplifying
x = 9

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