9n-7=63+21

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Solution for 9n-7=63+21 equation:


Simplifying
9n + -7 = 63 + 21

Reorder the terms:
-7 + 9n = 63 + 21

Combine like terms: 63 + 21 = 84
-7 + 9n = 84

Solving
-7 + 9n = 84

Solving for variable 'n'.

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

Add '7' to each side of the equation.
-7 + 7 + 9n = 84 + 7

Combine like terms: -7 + 7 = 0
0 + 9n = 84 + 7
9n = 84 + 7

Combine like terms: 84 + 7 = 91
9n = 91

Divide each side by '9'.
n = 10.11111111

Simplifying
n = 10.11111111

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