x+3(x+10)=x+7(x-6)

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Solution for x+3(x+10)=x+7(x-6) equation:


Simplifying
x + 3(x + 10) = x + 7(x + -6)

Reorder the terms:
x + 3(10 + x) = x + 7(x + -6)
x + (10 * 3 + x * 3) = x + 7(x + -6)
x + (30 + 3x) = x + 7(x + -6)

Reorder the terms:
30 + x + 3x = x + 7(x + -6)

Combine like terms: x + 3x = 4x
30 + 4x = x + 7(x + -6)

Reorder the terms:
30 + 4x = x + 7(-6 + x)
30 + 4x = x + (-6 * 7 + x * 7)
30 + 4x = x + (-42 + 7x)

Reorder the terms:
30 + 4x = -42 + x + 7x

Combine like terms: x + 7x = 8x
30 + 4x = -42 + 8x

Solving
30 + 4x = -42 + 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.
30 + 4x + -8x = -42 + 8x + -8x

Combine like terms: 4x + -8x = -4x
30 + -4x = -42 + 8x + -8x

Combine like terms: 8x + -8x = 0
30 + -4x = -42 + 0
30 + -4x = -42

Add '-30' to each side of the equation.
30 + -30 + -4x = -42 + -30

Combine like terms: 30 + -30 = 0
0 + -4x = -42 + -30
-4x = -42 + -30

Combine like terms: -42 + -30 = -72
-4x = -72

Divide each side by '-4'.
x = 18

Simplifying
x = 18

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