25n^2-9=7

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Solution for 25n^2-9=7 equation: 


Simplifying
25n2 + -9 = 7

Reorder the terms:
-9 + 25n2 = 7

Solving
-9 + 25n2 = 7

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '9' to each side of the equation.
-9 + 9 + 25n2 = 7 + 9

Combine like terms: -9 + 9 = 0
0 + 25n2 = 7 + 9
25n2 = 7 + 9

Combine like terms: 7 + 9 = 16
25n2 = 16

Divide each side by '25'.
n2 = 0.64

Simplifying
n2 = 0.64

Take the square root of each side:
n = {-0.8, 0.8}

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