100=40+2(n)

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Solution for 100=40+2(n) equation:


Simplifying
100 = 40 + 2(n)

Solving
100 = 40 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
100 + -2n = 40 + 2n + -2n

Combine like terms: 2n + -2n = 0
100 + -2n = 40 + 0
100 + -2n = 40

Add '-100' to each side of the equation.
100 + -100 + -2n = 40 + -100

Combine like terms: 100 + -100 = 0
0 + -2n = 40 + -100
-2n = 40 + -100

Combine like terms: 40 + -100 = -60
-2n = -60

Divide each side by '-2'.
n = 30

Simplifying
n = 30

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