21=7(3w+4)

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Solution for 21=7(3w+4) equation:


Simplifying
21 = 7(3w + 4)

Reorder the terms:
21 = 7(4 + 3w)
21 = (4 * 7 + 3w * 7)
21 = (28 + 21w)

Solving
21 = 28 + 21w

Solving for variable 'w'.

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

Add '-21w' to each side of the equation.
21 + -21w = 28 + 21w + -21w

Combine like terms: 21w + -21w = 0
21 + -21w = 28 + 0
21 + -21w = 28

Add '-21' to each side of the equation.
21 + -21 + -21w = 28 + -21

Combine like terms: 21 + -21 = 0
0 + -21w = 28 + -21
-21w = 28 + -21

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

Divide each side by '-21'.
w = -0.3333333333

Simplifying
w = -0.3333333333

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