x+4+x-7=3(x-7)

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Solution for x+4+x-7=3(x-7) equation:


Simplifying
x + 4 + x + -7 = 3(x + -7)

Reorder the terms:
4 + -7 + x + x = 3(x + -7)

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

Combine like terms: x + x = 2x
-3 + 2x = 3(x + -7)

Reorder the terms:
-3 + 2x = 3(-7 + x)
-3 + 2x = (-7 * 3 + x * 3)
-3 + 2x = (-21 + 3x)

Solving
-3 + 2x = -21 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-3 + 2x + -3x = -21 + 3x + -3x

Combine like terms: 2x + -3x = -1x
-3 + -1x = -21 + 3x + -3x

Combine like terms: 3x + -3x = 0
-3 + -1x = -21 + 0
-3 + -1x = -21

Add '3' to each side of the equation.
-3 + 3 + -1x = -21 + 3

Combine like terms: -3 + 3 = 0
0 + -1x = -21 + 3
-1x = -21 + 3

Combine like terms: -21 + 3 = -18
-1x = -18

Divide each side by '-1'.
x = 18

Simplifying
x = 18

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