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

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


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

Reorder the terms:
7(7 + x) + -9(3x + -4) = 18
(7 * 7 + x * 7) + -9(3x + -4) = 18
(49 + 7x) + -9(3x + -4) = 18

Reorder the terms:
49 + 7x + -9(-4 + 3x) = 18
49 + 7x + (-4 * -9 + 3x * -9) = 18
49 + 7x + (36 + -27x) = 18

Reorder the terms:
49 + 36 + 7x + -27x = 18

Combine like terms: 49 + 36 = 85
85 + 7x + -27x = 18

Combine like terms: 7x + -27x = -20x
85 + -20x = 18

Solving
85 + -20x = 18

Solving for variable 'x'.

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

Add '-85' to each side of the equation.
85 + -85 + -20x = 18 + -85

Combine like terms: 85 + -85 = 0
0 + -20x = 18 + -85
-20x = 18 + -85

Combine like terms: 18 + -85 = -67
-20x = -67

Divide each side by '-20'.
x = 3.35

Simplifying
x = 3.35

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