3x-3(5x+10)=42

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Solution for 3x-3(5x+10)=42 equation:


Simplifying
3x + -3(5x + 10) = 42

Reorder the terms:
3x + -3(10 + 5x) = 42
3x + (10 * -3 + 5x * -3) = 42
3x + (-30 + -15x) = 42

Reorder the terms:
-30 + 3x + -15x = 42

Combine like terms: 3x + -15x = -12x
-30 + -12x = 42

Solving
-30 + -12x = 42

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + -12x = 42 + 30

Combine like terms: -30 + 30 = 0
0 + -12x = 42 + 30
-12x = 42 + 30

Combine like terms: 42 + 30 = 72
-12x = 72

Divide each side by '-12'.
x = -6

Simplifying
x = -6

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