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Simplifying
7x2 + -5 = 31
Reorder the terms:
-5 + 7x2 = 31
Solving
-5 + 7x2 = 31
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '5' to each side of the equation.
-5 + 5 + 7x2 = 31 + 5
Combine like terms: -5 + 5 = 0
0 + 7x2 = 31 + 5
7x2 = 31 + 5
Combine like terms: 31 + 5 = 36
7x2 = 36
Divide each side by '7'.
x2 = 5.142857143
Simplifying
x2 = 5.142857143
Take the square root of each side:
x = {-2.267786838, 2.267786838}
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