3x+x+6+21-5x=90

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Solution for 3x+x+6+21-5x=90 equation:


Simplifying
3x + x + 6 + 21 + -5x = 90

Reorder the terms:
6 + 21 + 3x + x + -5x = 90

Combine like terms: 6 + 21 = 27
27 + 3x + x + -5x = 90

Combine like terms: 3x + x = 4x
27 + 4x + -5x = 90

Combine like terms: 4x + -5x = -1x
27 + -1x = 90

Solving
27 + -1x = 90

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -1x = 90 + -27

Combine like terms: 27 + -27 = 0
0 + -1x = 90 + -27
-1x = 90 + -27

Combine like terms: 90 + -27 = 63
-1x = 63

Divide each side by '-1'.
x = -63

Simplifying
x = -63

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