5(7-x)+6x=21+3x

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Solution for 5(7-x)+6x=21+3x equation:


Simplifying
5(7 + -1x) + 6x = 21 + 3x
(7 * 5 + -1x * 5) + 6x = 21 + 3x
(35 + -5x) + 6x = 21 + 3x

Combine like terms: -5x + 6x = 1x
35 + 1x = 21 + 3x

Solving
35 + 1x = 21 + 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.
35 + 1x + -3x = 21 + 3x + -3x

Combine like terms: 1x + -3x = -2x
35 + -2x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
35 + -2x = 21 + 0
35 + -2x = 21

Add '-35' to each side of the equation.
35 + -35 + -2x = 21 + -35

Combine like terms: 35 + -35 = 0
0 + -2x = 21 + -35
-2x = 21 + -35

Combine like terms: 21 + -35 = -14
-2x = -14

Divide each side by '-2'.
x = 7

Simplifying
x = 7

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