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Simplifying
5x2 + -9 = 7
Reorder the terms:
-9 + 5x2 = 7
Solving
-9 + 5x2 = 7
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + 5x2 = 7 + 9
Combine like terms: -9 + 9 = 0
0 + 5x2 = 7 + 9
5x2 = 7 + 9
Combine like terms: 7 + 9 = 16
5x2 = 16
Divide each side by '5'.
x2 = 3.2
Simplifying
x2 = 3.2
Take the square root of each side:
x = {-1.788854382, 1.788854382}
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