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Simplifying
7 = 20 + -16x2
Solving
7 = 20 + -16x2
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '16x2' to each side of the equation.
7 + 16x2 = 20 + -16x2 + 16x2
Combine like terms: -16x2 + 16x2 = 0
7 + 16x2 = 20 + 0
7 + 16x2 = 20
Add '-7' to each side of the equation.
7 + -7 + 16x2 = 20 + -7
Combine like terms: 7 + -7 = 0
0 + 16x2 = 20 + -7
16x2 = 20 + -7
Combine like terms: 20 + -7 = 13
16x2 = 13
Divide each side by '16'.
x2 = 0.8125
Simplifying
x2 = 0.8125
Take the square root of each side:
x = {-0.901387819, 0.901387819}
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