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Simplifying
5x2 + 220 = 300
Reorder the terms:
220 + 5x2 = 300
Solving
220 + 5x2 = 300
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-220' to each side of the equation.
220 + -220 + 5x2 = 300 + -220
Combine like terms: 220 + -220 = 0
0 + 5x2 = 300 + -220
5x2 = 300 + -220
Combine like terms: 300 + -220 = 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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