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Simplifying
7z2 + 2 = 1577
Reorder the terms:
2 + 7z2 = 1577
Solving
2 + 7z2 = 1577
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-2' to each side of the equation.
2 + -2 + 7z2 = 1577 + -2
Combine like terms: 2 + -2 = 0
0 + 7z2 = 1577 + -2
7z2 = 1577 + -2
Combine like terms: 1577 + -2 = 1575
7z2 = 1575
Divide each side by '7'.
z2 = 225
Simplifying
z2 = 225
Take the square root of each side:
z = {-15, 15}
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