-3(-x+7)+5x=21

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Solution for -3(-x+7)+5x=21 equation:


Simplifying
-3(-1x + 7) + 5x = 21

Reorder the terms:
-3(7 + -1x) + 5x = 21
(7 * -3 + -1x * -3) + 5x = 21
(-21 + 3x) + 5x = 21

Combine like terms: 3x + 5x = 8x
-21 + 8x = 21

Solving
-21 + 8x = 21

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 8x = 21 + 21

Combine like terms: -21 + 21 = 0
0 + 8x = 21 + 21
8x = 21 + 21

Combine like terms: 21 + 21 = 42
8x = 42

Divide each side by '8'.
x = 5.25

Simplifying
x = 5.25

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