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Simplifying
84 + -7x2 = -22
Solving
84 + -7x2 = -22
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-84' to each side of the equation.
84 + -84 + -7x2 = -22 + -84
Combine like terms: 84 + -84 = 0
0 + -7x2 = -22 + -84
-7x2 = -22 + -84
Combine like terms: -22 + -84 = -106
-7x2 = -106
Divide each side by '-7'.
x2 = 15.14285714
Simplifying
x2 = 15.14285714
Take the square root of each side:
x = {-3.89138242, 3.89138242}
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