3(x+1)+5(2+x)=18

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Solution for 3(x+1)+5(2+x)=18 equation:


Simplifying
3(x + 1) + 5(2 + x) = 18

Reorder the terms:
3(1 + x) + 5(2 + x) = 18
(1 * 3 + x * 3) + 5(2 + x) = 18
(3 + 3x) + 5(2 + x) = 18
3 + 3x + (2 * 5 + x * 5) = 18
3 + 3x + (10 + 5x) = 18

Reorder the terms:
3 + 10 + 3x + 5x = 18

Combine like terms: 3 + 10 = 13
13 + 3x + 5x = 18

Combine like terms: 3x + 5x = 8x
13 + 8x = 18

Solving
13 + 8x = 18

Solving for variable 'x'.

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

Add '-13' to each side of the equation.
13 + -13 + 8x = 18 + -13

Combine like terms: 13 + -13 = 0
0 + 8x = 18 + -13
8x = 18 + -13

Combine like terms: 18 + -13 = 5
8x = 5

Divide each side by '8'.
x = 0.625

Simplifying
x = 0.625

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