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Simplifying
7x2 + 7 = 161
Reorder the terms:
7 + 7x2 = 161
Solving
7 + 7x2 = 161
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 + 7x2 = 161 + -7
Combine like terms: 7 + -7 = 0
0 + 7x2 = 161 + -7
7x2 = 161 + -7
Combine like terms: 161 + -7 = 154
7x2 = 154
Divide each side by '7'.
x2 = 22
Simplifying
x2 = 22
Take the square root of each side:
x = {-4.69041576, 4.69041576}
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