-2x+7+9=-21

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Solution for -2x+7+9=-21 equation:


Simplifying
-2x + 7 + 9 = -21

Reorder the terms:
7 + 9 + -2x = -21

Combine like terms: 7 + 9 = 16
16 + -2x = -21

Solving
16 + -2x = -21

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + -2x = -21 + -16

Combine like terms: 16 + -16 = 0
0 + -2x = -21 + -16
-2x = -21 + -16

Combine like terms: -21 + -16 = -37
-2x = -37

Divide each side by '-2'.
x = 18.5

Simplifying
x = 18.5

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