3(x+5)-4(x+1)=18

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Solution for 3(x+5)-4(x+1)=18 equation:


Simplifying
3(x + 5) + -4(x + 1) = 18

Reorder the terms:
3(5 + x) + -4(x + 1) = 18
(5 * 3 + x * 3) + -4(x + 1) = 18
(15 + 3x) + -4(x + 1) = 18

Reorder the terms:
15 + 3x + -4(1 + x) = 18
15 + 3x + (1 * -4 + x * -4) = 18
15 + 3x + (-4 + -4x) = 18

Reorder the terms:
15 + -4 + 3x + -4x = 18

Combine like terms: 15 + -4 = 11
11 + 3x + -4x = 18

Combine like terms: 3x + -4x = -1x
11 + -1x = 18

Solving
11 + -1x = 18

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + -1x = 18 + -11

Combine like terms: 11 + -11 = 0
0 + -1x = 18 + -11
-1x = 18 + -11

Combine like terms: 18 + -11 = 7
-1x = 7

Divide each side by '-1'.
x = -7

Simplifying
x = -7

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