3x+2x+7=7x-21

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Solution for 3x+2x+7=7x-21 equation:


Simplifying
3x + 2x + 7 = 7x + -21

Reorder the terms:
7 + 3x + 2x = 7x + -21

Combine like terms: 3x + 2x = 5x
7 + 5x = 7x + -21

Reorder the terms:
7 + 5x = -21 + 7x

Solving
7 + 5x = -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.
7 + 5x + -7x = -21 + 7x + -7x

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

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

Add '-7' to each side of the equation.
7 + -7 + -2x = -21 + -7

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

Combine like terms: -21 + -7 = -28
-2x = -28

Divide each side by '-2'.
x = 14

Simplifying
x = 14

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