-4w+9=-7

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Solution for -4w+9=-7 equation: 


Simplifying
-4w + 9 = -7

Reorder the terms:
9 + -4w = -7

Solving
9 + -4w = -7

Solving for variable 'w'.

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

Add '-9' to each side of the equation.
9 + -9 + -4w = -7 + -9

Combine like terms: 9 + -9 = 0
0 + -4w = -7 + -9
-4w = -7 + -9

Combine like terms: -7 + -9 = -16
-4w = -16

Divide each side by '-4'.
w = 4

Simplifying
w = 4

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