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Simplifying
3w2 + -18 = 7
Reorder the terms:
-18 + 3w2 = 7
Solving
-18 + 3w2 = 7
Solving for variable 'w'.
Move all terms containing w to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 3w2 = 7 + 18
Combine like terms: -18 + 18 = 0
0 + 3w2 = 7 + 18
3w2 = 7 + 18
Combine like terms: 7 + 18 = 25
3w2 = 25
Divide each side by '3'.
w2 = 8.333333333
Simplifying
w2 = 8.333333333
Take the square root of each side:
w = {-2.886751346, 2.886751346}
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