7(6-9x-3x)+7(9x+7)=28

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Solution for 7(6-9x-3x)+7(9x+7)=28 equation:


Simplifying
7(6 + -9x + -3x) + 7(9x + 7) = 28

Combine like terms: -9x + -3x = -12x
7(6 + -12x) + 7(9x + 7) = 28
(6 * 7 + -12x * 7) + 7(9x + 7) = 28
(42 + -84x) + 7(9x + 7) = 28

Reorder the terms:
42 + -84x + 7(7 + 9x) = 28
42 + -84x + (7 * 7 + 9x * 7) = 28
42 + -84x + (49 + 63x) = 28

Reorder the terms:
42 + 49 + -84x + 63x = 28

Combine like terms: 42 + 49 = 91
91 + -84x + 63x = 28

Combine like terms: -84x + 63x = -21x
91 + -21x = 28

Solving
91 + -21x = 28

Solving for variable 'x'.

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

Add '-91' to each side of the equation.
91 + -91 + -21x = 28 + -91

Combine like terms: 91 + -91 = 0
0 + -21x = 28 + -91
-21x = 28 + -91

Combine like terms: 28 + -91 = -63
-21x = -63

Divide each side by '-21'.
x = 3

Simplifying
x = 3

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