15=4x-7(x+3)

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Solution for 15=4x-7(x+3) equation:


Simplifying
15 = 4x + -7(x + 3)

Reorder the terms:
15 = 4x + -7(3 + x)
15 = 4x + (3 * -7 + x * -7)
15 = 4x + (-21 + -7x)

Reorder the terms:
15 = -21 + 4x + -7x

Combine like terms: 4x + -7x = -3x
15 = -21 + -3x

Solving
15 = -21 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
15 + 3x = -21 + -3x + 3x

Combine like terms: -3x + 3x = 0
15 + 3x = -21 + 0
15 + 3x = -21

Add '-15' to each side of the equation.
15 + -15 + 3x = -21 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = -21 + -15
3x = -21 + -15

Combine like terms: -21 + -15 = -36
3x = -36

Divide each side by '3'.
x = -12

Simplifying
x = -12

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