3n+2(20-n)=49

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Solution for 3n+2(20-n)=49 equation:


Simplifying
3n + 2(20 + -1n) = 49
3n + (20 * 2 + -1n * 2) = 49
3n + (40 + -2n) = 49

Reorder the terms:
40 + 3n + -2n = 49

Combine like terms: 3n + -2n = 1n
40 + 1n = 49

Solving
40 + 1n = 49

Solving for variable 'n'.

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

Add '-40' to each side of the equation.
40 + -40 + 1n = 49 + -40

Combine like terms: 40 + -40 = 0
0 + 1n = 49 + -40
1n = 49 + -40

Combine like terms: 49 + -40 = 9
1n = 9

Divide each side by '1'.
n = 9

Simplifying
n = 9

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