7(3-3x-3x)+9(4x+3)=18

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Solution for 7(3-3x-3x)+9(4x+3)=18 equation:


Simplifying
7(3 + -3x + -3x) + 9(4x + 3) = 18

Combine like terms: -3x + -3x = -6x
7(3 + -6x) + 9(4x + 3) = 18
(3 * 7 + -6x * 7) + 9(4x + 3) = 18
(21 + -42x) + 9(4x + 3) = 18

Reorder the terms:
21 + -42x + 9(3 + 4x) = 18
21 + -42x + (3 * 9 + 4x * 9) = 18
21 + -42x + (27 + 36x) = 18

Reorder the terms:
21 + 27 + -42x + 36x = 18

Combine like terms: 21 + 27 = 48
48 + -42x + 36x = 18

Combine like terms: -42x + 36x = -6x
48 + -6x = 18

Solving
48 + -6x = 18

Solving for variable 'x'.

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

Add '-48' to each side of the equation.
48 + -48 + -6x = 18 + -48

Combine like terms: 48 + -48 = 0
0 + -6x = 18 + -48
-6x = 18 + -48

Combine like terms: 18 + -48 = -30
-6x = -30

Divide each side by '-6'.
x = 5

Simplifying
x = 5

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