x+x+1+x+2=-21

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Solution for x+x+1+x+2=-21 equation:


Simplifying
x + x + 1 + x + 2 = -21

Reorder the terms:
1 + 2 + x + x + x = -21

Combine like terms: 1 + 2 = 3
3 + x + x + x = -21

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

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

Solving
3 + 3x = -21

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 3x = -21 + -3

Combine like terms: 3 + -3 = 0
0 + 3x = -21 + -3
3x = -21 + -3

Combine like terms: -21 + -3 = -24
3x = -24

Divide each side by '3'.
x = -8

Simplifying
x = -8

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