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Simplifying
9x2 + 7 = 71
Reorder the terms:
7 + 9x2 = 71
Solving
7 + 9x2 = 71
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7' to each side of the equation.
7 + -7 + 9x2 = 71 + -7
Combine like terms: 7 + -7 = 0
0 + 9x2 = 71 + -7
9x2 = 71 + -7
Combine like terms: 71 + -7 = 64
9x2 = 64
Divide each side by '9'.
x2 = 7.111111111
Simplifying
x2 = 7.111111111
Take the square root of each side:
x = {-2.666666667, 2.666666667}
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