7(5x+9)=12-(x-9)

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Solution for 7(5x+9)=12-(x-9) equation:


Simplifying
7(5x + 9) = 12 + -1(x + -9)

Reorder the terms:
7(9 + 5x) = 12 + -1(x + -9)
(9 * 7 + 5x * 7) = 12 + -1(x + -9)
(63 + 35x) = 12 + -1(x + -9)

Reorder the terms:
63 + 35x = 12 + -1(-9 + x)
63 + 35x = 12 + (-9 * -1 + x * -1)
63 + 35x = 12 + (9 + -1x)

Combine like terms: 12 + 9 = 21
63 + 35x = 21 + -1x

Solving
63 + 35x = 21 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
63 + 35x + x = 21 + -1x + x

Combine like terms: 35x + x = 36x
63 + 36x = 21 + -1x + x

Combine like terms: -1x + x = 0
63 + 36x = 21 + 0
63 + 36x = 21

Add '-63' to each side of the equation.
63 + -63 + 36x = 21 + -63

Combine like terms: 63 + -63 = 0
0 + 36x = 21 + -63
36x = 21 + -63

Combine like terms: 21 + -63 = -42
36x = -42

Divide each side by '36'.
x = -1.166666667

Simplifying
x = -1.166666667

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