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Simplifying
5x2 + 60 = 80
Reorder the terms:
60 + 5x2 = 80
Solving
60 + 5x2 = 80
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 = 80 + -60
Combine like terms: 60 + -60 = 0
0 + 5x2 = 80 + -60
5x2 = 80 + -60
Combine like terms: 80 + -60 = 20
5x2 = 20
Divide each side by '5'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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