3(9-2x)-5(11-x)-28=7(x+4)-28

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Solution for 3(9-2x)-5(11-x)-28=7(x+4)-28 equation:


Simplifying
3(9 + -2x) + -5(11 + -1x) + -28 = 7(x + 4) + -28
(9 * 3 + -2x * 3) + -5(11 + -1x) + -28 = 7(x + 4) + -28
(27 + -6x) + -5(11 + -1x) + -28 = 7(x + 4) + -28
27 + -6x + (11 * -5 + -1x * -5) + -28 = 7(x + 4) + -28
27 + -6x + (-55 + 5x) + -28 = 7(x + 4) + -28

Reorder the terms:
27 + -55 + -28 + -6x + 5x = 7(x + 4) + -28

Combine like terms: 27 + -55 = -28
-28 + -28 + -6x + 5x = 7(x + 4) + -28

Combine like terms: -28 + -28 = -56
-56 + -6x + 5x = 7(x + 4) + -28

Combine like terms: -6x + 5x = -1x
-56 + -1x = 7(x + 4) + -28

Reorder the terms:
-56 + -1x = 7(4 + x) + -28
-56 + -1x = (4 * 7 + x * 7) + -28
-56 + -1x = (28 + 7x) + -28

Reorder the terms:
-56 + -1x = 28 + -28 + 7x

Combine like terms: 28 + -28 = 0
-56 + -1x = 0 + 7x
-56 + -1x = 7x

Solving
-56 + -1x = 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-56 + -1x + -7x = 7x + -7x

Combine like terms: -1x + -7x = -8x
-56 + -8x = 7x + -7x

Combine like terms: 7x + -7x = 0
-56 + -8x = 0

Add '56' to each side of the equation.
-56 + 56 + -8x = 0 + 56

Combine like terms: -56 + 56 = 0
0 + -8x = 0 + 56
-8x = 0 + 56

Combine like terms: 0 + 56 = 56
-8x = 56

Divide each side by '-8'.
x = -7

Simplifying
x = -7

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