7(3x+9)=18-(6x+9)

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Solution for 7(3x+9)=18-(6x+9) equation:


Simplifying
7(3x + 9) = 18 + -1(6x + 9)

Reorder the terms:
7(9 + 3x) = 18 + -1(6x + 9)
(9 * 7 + 3x * 7) = 18 + -1(6x + 9)
(63 + 21x) = 18 + -1(6x + 9)

Reorder the terms:
63 + 21x = 18 + -1(9 + 6x)
63 + 21x = 18 + (9 * -1 + 6x * -1)
63 + 21x = 18 + (-9 + -6x)

Combine like terms: 18 + -9 = 9
63 + 21x = 9 + -6x

Solving
63 + 21x = 9 + -6x

Solving for variable 'x'.

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

Add '6x' to each side of the equation.
63 + 21x + 6x = 9 + -6x + 6x

Combine like terms: 21x + 6x = 27x
63 + 27x = 9 + -6x + 6x

Combine like terms: -6x + 6x = 0
63 + 27x = 9 + 0
63 + 27x = 9

Add '-63' to each side of the equation.
63 + -63 + 27x = 9 + -63

Combine like terms: 63 + -63 = 0
0 + 27x = 9 + -63
27x = 9 + -63

Combine like terms: 9 + -63 = -54
27x = -54

Divide each side by '27'.
x = -2

Simplifying
x = -2

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