9w-21=3(w+1)

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Solution for 9w-21=3(w+1) equation:


Simplifying
9w + -21 = 3(w + 1)

Reorder the terms:
-21 + 9w = 3(w + 1)

Reorder the terms:
-21 + 9w = 3(1 + w)
-21 + 9w = (1 * 3 + w * 3)
-21 + 9w = (3 + 3w)

Solving
-21 + 9w = 3 + 3w

Solving for variable 'w'.

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

Add '-3w' to each side of the equation.
-21 + 9w + -3w = 3 + 3w + -3w

Combine like terms: 9w + -3w = 6w
-21 + 6w = 3 + 3w + -3w

Combine like terms: 3w + -3w = 0
-21 + 6w = 3 + 0
-21 + 6w = 3

Add '21' to each side of the equation.
-21 + 21 + 6w = 3 + 21

Combine like terms: -21 + 21 = 0
0 + 6w = 3 + 21
6w = 3 + 21

Combine like terms: 3 + 21 = 24
6w = 24

Divide each side by '6'.
w = 4

Simplifying
w = 4

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