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Simplifying
0.2x2 + -7 = 74
Reorder the terms:
-7 + 0.2x2 = 74
Solving
-7 + 0.2x2 = 74
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 0.2x2 = 74 + 7
Combine like terms: -7 + 7 = 0
0 + 0.2x2 = 74 + 7
0.2x2 = 74 + 7
Combine like terms: 74 + 7 = 81
0.2x2 = 81
Divide each side by '0.2'.
x2 = 405
Simplifying
x2 = 405
Take the square root of each side:
x = {-20.124611797, 20.124611797}
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