2w+9=8w+21

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Solution for 2w+9=8w+21 equation:


Simplifying
2w + 9 = 8w + 21

Reorder the terms:
9 + 2w = 8w + 21

Reorder the terms:
9 + 2w = 21 + 8w

Solving
9 + 2w = 21 + 8w

Solving for variable 'w'.

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

Add '-8w' to each side of the equation.
9 + 2w + -8w = 21 + 8w + -8w

Combine like terms: 2w + -8w = -6w
9 + -6w = 21 + 8w + -8w

Combine like terms: 8w + -8w = 0
9 + -6w = 21 + 0
9 + -6w = 21

Add '-9' to each side of the equation.
9 + -9 + -6w = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -6w = 21 + -9
-6w = 21 + -9

Combine like terms: 21 + -9 = 12
-6w = 12

Divide each side by '-6'.
w = -2

Simplifying
w = -2

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