(2w)3-(7w)2-6w+21=

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Solution for (2w)3-(7w)2-6w+21= equation:


Simplifying
(2w) * 3 + -1(7w) * 2 + -6w + 21 = 0

Remove parenthesis around (2w)
2w * 3 + -1(7w) * 2 + -6w + 21 = 0

Reorder the terms for easier multiplication:
2 * 3w + -1(7w) * 2 + -6w + 21 = 0

Multiply 2 * 3
6w + -1(7w) * 2 + -6w + 21 = 0

Remove parenthesis around (7w)
6w + -1 * 7w * 2 + -6w + 21 = 0

Reorder the terms for easier multiplication:
6w + -1 * 7 * 2w + -6w + 21 = 0

Multiply -1 * 7
6w + -7 * 2w + -6w + 21 = 0

Multiply -7 * 2
6w + -14w + -6w + 21 = 0

Reorder the terms:
21 + 6w + -14w + -6w = 0

Combine like terms: 6w + -14w = -8w
21 + -8w + -6w = 0

Combine like terms: -8w + -6w = -14w
21 + -14w = 0

Solving
21 + -14w = 0

Solving for variable 'w'.

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

Add '-21' to each side of the equation.
21 + -21 + -14w = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -14w = 0 + -21
-14w = 0 + -21

Combine like terms: 0 + -21 = -21
-14w = -21

Divide each side by '-14'.
w = 1.5

Simplifying
w = 1.5

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