27+3x=-x+21

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Solution for 27+3x=-x+21 equation:


Simplifying
27 + 3x = -1x + 21

Reorder the terms:
27 + 3x = 21 + -1x

Solving
27 + 3x = 21 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
27 + 3x + x = 21 + -1x + x

Combine like terms: 3x + x = 4x
27 + 4x = 21 + -1x + x

Combine like terms: -1x + x = 0
27 + 4x = 21 + 0
27 + 4x = 21

Add '-27' to each side of the equation.
27 + -27 + 4x = 21 + -27

Combine like terms: 27 + -27 = 0
0 + 4x = 21 + -27
4x = 21 + -27

Combine like terms: 21 + -27 = -6
4x = -6

Divide each side by '4'.
x = -1.5

Simplifying
x = -1.5

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