-2X+3(2X+9)-7=8

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Solution for -2X+3(2X+9)-7=8 equation:


Simplifying
-2X + 3(2X + 9) + -7 = 8

Reorder the terms:
-2X + 3(9 + 2X) + -7 = 8
-2X + (9 * 3 + 2X * 3) + -7 = 8
-2X + (27 + 6X) + -7 = 8

Reorder the terms:
27 + -7 + -2X + 6X = 8

Combine like terms: 27 + -7 = 20
20 + -2X + 6X = 8

Combine like terms: -2X + 6X = 4X
20 + 4X = 8

Solving
20 + 4X = 8

Solving for variable 'X'.

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

Add '-20' to each side of the equation.
20 + -20 + 4X = 8 + -20

Combine like terms: 20 + -20 = 0
0 + 4X = 8 + -20
4X = 8 + -20

Combine like terms: 8 + -20 = -12
4X = -12

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

Simplifying
X = -3

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