5x+21=7(x-13)

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Solution for 5x+21=7(x-13) equation:


Simplifying
5x + 21 = 7(x + -13)

Reorder the terms:
21 + 5x = 7(x + -13)

Reorder the terms:
21 + 5x = 7(-13 + x)
21 + 5x = (-13 * 7 + x * 7)
21 + 5x = (-91 + 7x)

Solving
21 + 5x = -91 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
21 + 5x + -7x = -91 + 7x + -7x

Combine like terms: 5x + -7x = -2x
21 + -2x = -91 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + -2x = -91 + 0
21 + -2x = -91

Add '-21' to each side of the equation.
21 + -21 + -2x = -91 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = -91 + -21
-2x = -91 + -21

Combine like terms: -91 + -21 = -112
-2x = -112

Divide each side by '-2'.
x = 56

Simplifying
x = 56

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