x+2x+7=-21+7

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


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

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

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

Combine like terms: -21 + 7 = -14
7 + 3x = -14

Solving
7 + 3x = -14

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 3x = -14 + -7

Combine like terms: 7 + -7 = 0
0 + 3x = -14 + -7
3x = -14 + -7

Combine like terms: -14 + -7 = -21
3x = -21

Divide each side by '3'.
x = -7

Simplifying
x = -7

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