7(x+5)+2x=7x-21

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Solution for 7(x+5)+2x=7x-21 equation:


Simplifying
7(x + 5) + 2x = 7x + -21

Reorder the terms:
7(5 + x) + 2x = 7x + -21
(5 * 7 + x * 7) + 2x = 7x + -21
(35 + 7x) + 2x = 7x + -21

Combine like terms: 7x + 2x = 9x
35 + 9x = 7x + -21

Reorder the terms:
35 + 9x = -21 + 7x

Solving
35 + 9x = -21 + 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.
35 + 9x + -7x = -21 + 7x + -7x

Combine like terms: 9x + -7x = 2x
35 + 2x = -21 + 7x + -7x

Combine like terms: 7x + -7x = 0
35 + 2x = -21 + 0
35 + 2x = -21

Add '-35' to each side of the equation.
35 + -35 + 2x = -21 + -35

Combine like terms: 35 + -35 = 0
0 + 2x = -21 + -35
2x = -21 + -35

Combine like terms: -21 + -35 = -56
2x = -56

Divide each side by '2'.
x = -28

Simplifying
x = -28

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