(x+7)-3x=21.5

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Solution for (x+7)-3x=21.5 equation:


Simplifying
(x + 7) + -3x = 21.5

Reorder the terms:
(7 + x) + -3x = 21.5

Remove parenthesis around (7 + x)
7 + x + -3x = 21.5

Combine like terms: x + -3x = -2x
7 + -2x = 21.5

Solving
7 + -2x = 21.5

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 + -2x = 21.5 + -7

Combine like terms: 7 + -7 = 0
0 + -2x = 21.5 + -7
-2x = 21.5 + -7

Combine like terms: 21.5 + -7 = 14.5
-2x = 14.5

Divide each side by '-2'.
x = -7.25

Simplifying
x = -7.25

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