x+3(x+5)=12+8x+15

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Solution for x+3(x+5)=12+8x+15 equation:


Simplifying
x + 3(x + 5) = 12 + 8x + 15

Reorder the terms:
x + 3(5 + x) = 12 + 8x + 15
x + (5 * 3 + x * 3) = 12 + 8x + 15
x + (15 + 3x) = 12 + 8x + 15

Reorder the terms:
15 + x + 3x = 12 + 8x + 15

Combine like terms: x + 3x = 4x
15 + 4x = 12 + 8x + 15

Reorder the terms:
15 + 4x = 12 + 15 + 8x

Combine like terms: 12 + 15 = 27
15 + 4x = 27 + 8x

Solving
15 + 4x = 27 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
15 + 4x + -8x = 27 + 8x + -8x

Combine like terms: 4x + -8x = -4x
15 + -4x = 27 + 8x + -8x

Combine like terms: 8x + -8x = 0
15 + -4x = 27 + 0
15 + -4x = 27

Add '-15' to each side of the equation.
15 + -15 + -4x = 27 + -15

Combine like terms: 15 + -15 = 0
0 + -4x = 27 + -15
-4x = 27 + -15

Combine like terms: 27 + -15 = 12
-4x = 12

Divide each side by '-4'.
x = -3

Simplifying
x = -3

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