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Simplifying
7y2 + -7 = 144
Reorder the terms:
-7 + 7y2 = 144
Solving
-7 + 7y2 = 144
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 7y2 = 144 + 7
Combine like terms: -7 + 7 = 0
0 + 7y2 = 144 + 7
7y2 = 144 + 7
Combine like terms: 144 + 7 = 151
7y2 = 151
Divide each side by '7'.
y2 = 21.57142857
Simplifying
y2 = 21.57142857
Take the square root of each side:
y = {-4.644505202, 4.644505202}
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