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Simplifying
40 + -7x2 = 0
Solving
40 + -7x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-40' to each side of the equation.
40 + -40 + -7x2 = 0 + -40
Combine like terms: 40 + -40 = 0
0 + -7x2 = 0 + -40
-7x2 = 0 + -40
Combine like terms: 0 + -40 = -40
-7x2 = -40
Divide each side by '-7'.
x2 = 5.714285714
Simplifying
x2 = 5.714285714
Take the square root of each side:
x = {-2.390457219, 2.390457219}
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