x+7+2x+3(x-1)=100

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Solution for x+7+2x+3(x-1)=100 equation:


Simplifying
x + 7 + 2x + 3(x + -1) = 100

Reorder the terms:
x + 7 + 2x + 3(-1 + x) = 100
x + 7 + 2x + (-1 * 3 + x * 3) = 100
x + 7 + 2x + (-3 + 3x) = 100

Reorder the terms:
7 + -3 + x + 2x + 3x = 100

Combine like terms: 7 + -3 = 4
4 + x + 2x + 3x = 100

Combine like terms: x + 2x = 3x
4 + 3x + 3x = 100

Combine like terms: 3x + 3x = 6x
4 + 6x = 100

Solving
4 + 6x = 100

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 6x = 100 + -4

Combine like terms: 4 + -4 = 0
0 + 6x = 100 + -4
6x = 100 + -4

Combine like terms: 100 + -4 = 96
6x = 96

Divide each side by '6'.
x = 16

Simplifying
x = 16

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