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Simplifying
7x2 + 2 = 18
Reorder the terms:
2 + 7x2 = 18
Solving
2 + 7x2 = 18
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-2' to each side of the equation.
2 + -2 + 7x2 = 18 + -2
Combine like terms: 2 + -2 = 0
0 + 7x2 = 18 + -2
7x2 = 18 + -2
Combine like terms: 18 + -2 = 16
7x2 = 16
Divide each side by '7'.
x2 = 2.285714286
Simplifying
x2 = 2.285714286
Take the square root of each side:
x = {-1.511857892, 1.511857892}
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