3x-(30+4x)=12x-15-4x+3

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Solution for 3x-(30+4x)=12x-15-4x+3 equation:


Simplifying
3x + -1(30 + 4x) = 12x + -15 + -4x + 3
3x + (30 * -1 + 4x * -1) = 12x + -15 + -4x + 3
3x + (-30 + -4x) = 12x + -15 + -4x + 3

Reorder the terms:
-30 + 3x + -4x = 12x + -15 + -4x + 3

Combine like terms: 3x + -4x = -1x
-30 + -1x = 12x + -15 + -4x + 3

Reorder the terms:
-30 + -1x = -15 + 3 + 12x + -4x

Combine like terms: -15 + 3 = -12
-30 + -1x = -12 + 12x + -4x

Combine like terms: 12x + -4x = 8x
-30 + -1x = -12 + 8x

Solving
-30 + -1x = -12 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-30 + -1x + -8x = -12 + 8x + -8x

Combine like terms: -1x + -8x = -9x
-30 + -9x = -12 + 8x + -8x

Combine like terms: 8x + -8x = 0
-30 + -9x = -12 + 0
-30 + -9x = -12

Add '30' to each side of the equation.
-30 + 30 + -9x = -12 + 30

Combine like terms: -30 + 30 = 0
0 + -9x = -12 + 30
-9x = -12 + 30

Combine like terms: -12 + 30 = 18
-9x = 18

Divide each side by '-9'.
x = -2

Simplifying
x = -2

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