3x+13=7x-2(x+4)

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Solution for 3x+13=7x-2(x+4) equation:


Simplifying
3x + 13 = 7x + -2(x + 4)

Reorder the terms:
13 + 3x = 7x + -2(x + 4)

Reorder the terms:
13 + 3x = 7x + -2(4 + x)
13 + 3x = 7x + (4 * -2 + x * -2)
13 + 3x = 7x + (-8 + -2x)

Reorder the terms:
13 + 3x = -8 + 7x + -2x

Combine like terms: 7x + -2x = 5x
13 + 3x = -8 + 5x

Solving
13 + 3x = -8 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
13 + 3x + -5x = -8 + 5x + -5x

Combine like terms: 3x + -5x = -2x
13 + -2x = -8 + 5x + -5x

Combine like terms: 5x + -5x = 0
13 + -2x = -8 + 0
13 + -2x = -8

Add '-13' to each side of the equation.
13 + -13 + -2x = -8 + -13

Combine like terms: 13 + -13 = 0
0 + -2x = -8 + -13
-2x = -8 + -13

Combine like terms: -8 + -13 = -21
-2x = -21

Divide each side by '-2'.
x = 10.5

Simplifying
x = 10.5

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