x+3+2x+9=4x-7

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Solution for x+3+2x+9=4x-7 equation:


Simplifying
x + 3 + 2x + 9 = 4x + -7

Reorder the terms:
3 + 9 + x + 2x = 4x + -7

Combine like terms: 3 + 9 = 12
12 + x + 2x = 4x + -7

Combine like terms: x + 2x = 3x
12 + 3x = 4x + -7

Reorder the terms:
12 + 3x = -7 + 4x

Solving
12 + 3x = -7 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
12 + 3x + -4x = -7 + 4x + -4x

Combine like terms: 3x + -4x = -1x
12 + -1x = -7 + 4x + -4x

Combine like terms: 4x + -4x = 0
12 + -1x = -7 + 0
12 + -1x = -7

Add '-12' to each side of the equation.
12 + -12 + -1x = -7 + -12

Combine like terms: 12 + -12 = 0
0 + -1x = -7 + -12
-1x = -7 + -12

Combine like terms: -7 + -12 = -19
-1x = -19

Divide each side by '-1'.
x = 19

Simplifying
x = 19

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