7(2n+3)+21=100+40

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Solution for 7(2n+3)+21=100+40 equation: 



7(2n+3)+21=100+40

We move all terms to the left:

7(2n+3)+21-(100+40)=0

We add all the numbers together, and all the variables

7(2n+3)+21-140=0

We add all the numbers together, and all the variables

7(2n+3)-119=0

We multiply parentheses

14n+21-119=0

We add all the numbers together, and all the variables

14n-98=0

We move all terms containing n to the left, all other terms to the right

14n=98

n=98/14

n=7

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