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Simplifying
5y2 + -100 = 145
Reorder the terms:
-100 + 5y2 = 145
Solving
-100 + 5y2 = 145
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '100' to each side of the equation.
-100 + 100 + 5y2 = 145 + 100
Combine like terms: -100 + 100 = 0
0 + 5y2 = 145 + 100
5y2 = 145 + 100
Combine like terms: 145 + 100 = 245
5y2 = 245
Divide each side by '5'.
y2 = 49
Simplifying
y2 = 49
Take the square root of each side:
y = {-7, 7}
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