-21=7(w-5)

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Solution for -21=7(w-5) equation:


Simplifying
-21 = 7(w + -5)

Reorder the terms:
-21 = 7(-5 + w)
-21 = (-5 * 7 + w * 7)
-21 = (-35 + 7w)

Solving
-21 = -35 + 7w

Solving for variable 'w'.

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

Add '-7w' to each side of the equation.
-21 + -7w = -35 + 7w + -7w

Combine like terms: 7w + -7w = 0
-21 + -7w = -35 + 0
-21 + -7w = -35

Add '21' to each side of the equation.
-21 + 21 + -7w = -35 + 21

Combine like terms: -21 + 21 = 0
0 + -7w = -35 + 21
-7w = -35 + 21

Combine like terms: -35 + 21 = -14
-7w = -14

Divide each side by '-7'.
w = 2

Simplifying
w = 2

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