9(3x+6)-(7x-3)=12

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Solution for 9(3x+6)-(7x-3)=12 equation:


Simplifying
9(3x + 6) + -1(7x + -3) = 12

Reorder the terms:
9(6 + 3x) + -1(7x + -3) = 12
(6 * 9 + 3x * 9) + -1(7x + -3) = 12
(54 + 27x) + -1(7x + -3) = 12

Reorder the terms:
54 + 27x + -1(-3 + 7x) = 12
54 + 27x + (-3 * -1 + 7x * -1) = 12
54 + 27x + (3 + -7x) = 12

Reorder the terms:
54 + 3 + 27x + -7x = 12

Combine like terms: 54 + 3 = 57
57 + 27x + -7x = 12

Combine like terms: 27x + -7x = 20x
57 + 20x = 12

Solving
57 + 20x = 12

Solving for variable 'x'.

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

Add '-57' to each side of the equation.
57 + -57 + 20x = 12 + -57

Combine like terms: 57 + -57 = 0
0 + 20x = 12 + -57
20x = 12 + -57

Combine like terms: 12 + -57 = -45
20x = -45

Divide each side by '20'.
x = -2.25

Simplifying
x = -2.25

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