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Simplifying
7z2 + 4 = 1579
Reorder the terms:
4 + 7z2 = 1579
Solving
4 + 7z2 = 1579
Solving for variable 'z'.
Move all terms containing z to the left, all other terms to the right.
Add '-4' to each side of the equation.
4 + -4 + 7z2 = 1579 + -4
Combine like terms: 4 + -4 = 0
0 + 7z2 = 1579 + -4
7z2 = 1579 + -4
Combine like terms: 1579 + -4 = 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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