9n-(n-10)=20

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Solution for 9n-(n-10)=20 equation:


Simplifying
9n + -1(n + -10) = 20

Reorder the terms:
9n + -1(-10 + n) = 20
9n + (-10 * -1 + n * -1) = 20
9n + (10 + -1n) = 20

Reorder the terms:
10 + 9n + -1n = 20

Combine like terms: 9n + -1n = 8n
10 + 8n = 20

Solving
10 + 8n = 20

Solving for variable 'n'.

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

Add '-10' to each side of the equation.
10 + -10 + 8n = 20 + -10

Combine like terms: 10 + -10 = 0
0 + 8n = 20 + -10
8n = 20 + -10

Combine like terms: 20 + -10 = 10
8n = 10

Divide each side by '8'.
n = 1.25

Simplifying
n = 1.25

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