9(7+5(7-x)+2x)=21-2x

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Solution for 9(7+5(7-x)+2x)=21-2x equation:


Simplifying
9(7 + 5(7 + -1x) + 2x) = 21 + -2x
9(7 + (7 * 5 + -1x * 5) + 2x) = 21 + -2x
9(7 + (35 + -5x) + 2x) = 21 + -2x

Combine like terms: 7 + 35 = 42
9(42 + -5x + 2x) = 21 + -2x

Combine like terms: -5x + 2x = -3x
9(42 + -3x) = 21 + -2x
(42 * 9 + -3x * 9) = 21 + -2x
(378 + -27x) = 21 + -2x

Solving
378 + -27x = 21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
378 + -27x + 2x = 21 + -2x + 2x

Combine like terms: -27x + 2x = -25x
378 + -25x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
378 + -25x = 21 + 0
378 + -25x = 21

Add '-378' to each side of the equation.
378 + -378 + -25x = 21 + -378

Combine like terms: 378 + -378 = 0
0 + -25x = 21 + -378
-25x = 21 + -378

Combine like terms: 21 + -378 = -357
-25x = -357

Divide each side by '-25'.
x = 14.28

Simplifying
x = 14.28

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