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Simplifying
5x2 + -60 = 20
Reorder the terms:
-60 + 5x2 = 20
Solving
-60 + 5x2 = 20
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '60' to each side of the equation.
-60 + 60 + 5x2 = 20 + 60
Combine like terms: -60 + 60 = 0
0 + 5x2 = 20 + 60
5x2 = 20 + 60
Combine like terms: 20 + 60 = 80
5x2 = 80
Divide each side by '5'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
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