x+17+3x=-18-3x-21

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Solution for x+17+3x=-18-3x-21 equation: 


Simplifying
x + 17 + 3x = -18 + -3x + -21

Reorder the terms:
17 + x + 3x = -18 + -3x + -21

Combine like terms: x + 3x = 4x
17 + 4x = -18 + -3x + -21

Reorder the terms:
17 + 4x = -18 + -21 + -3x

Combine like terms: -18 + -21 = -39
17 + 4x = -39 + -3x

Solving
17 + 4x = -39 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
17 + 4x + 3x = -39 + -3x + 3x

Combine like terms: 4x + 3x = 7x
17 + 7x = -39 + -3x + 3x

Combine like terms: -3x + 3x = 0
17 + 7x = -39 + 0
17 + 7x = -39

Add '-17' to each side of the equation.
17 + -17 + 7x = -39 + -17

Combine like terms: 17 + -17 = 0
0 + 7x = -39 + -17
7x = -39 + -17

Combine like terms: -39 + -17 = -56
7x = -56

Divide each side by '7'.
x = -8

Simplifying
x = -8

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