21=w+6w

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Solution for 21=w+6w equation:


Simplifying
21 = w + 6w

Combine like terms: w + 6w = 7w
21 = 7w

Solving
21 = 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 = 7w + -7w

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

Add '-21' to each side of the equation.
21 + -21 + -7w = 0 + -21

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

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

Divide each side by '-7'.
w = 3

Simplifying
w = 3

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