9x-(2x-12)=42

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Solution for 9x-(2x-12)=42 equation:


Simplifying
9x + -1(2x + -12) = 42

Reorder the terms:
9x + -1(-12 + 2x) = 42
9x + (-12 * -1 + 2x * -1) = 42
9x + (12 + -2x) = 42

Reorder the terms:
12 + 9x + -2x = 42

Combine like terms: 9x + -2x = 7x
12 + 7x = 42

Solving
12 + 7x = 42

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 7x = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 7x = 42 + -12
7x = 42 + -12

Combine like terms: 42 + -12 = 30
7x = 30

Divide each side by '7'.
x = 4.285714286

Simplifying
x = 4.285714286

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