4w-7=21

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Solution for 4w-7=21 equation: 


Simplifying
4w + -7 = 21

Reorder the terms:
-7 + 4w = 21

Solving
-7 + 4w = 21

Solving for variable 'w'.

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

Add '7' to each side of the equation.
-7 + 7 + 4w = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 4w = 21 + 7
4w = 21 + 7

Combine like terms: 21 + 7 = 28
4w = 28

Divide each side by '4'.
w = 7

Simplifying
w = 7

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