-4(2n+5)-2=-21-7n

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Solution for -4(2n+5)-2=-21-7n equation:



-4(2n+5)-2=-21-7n
We move all terms to the left:
-4(2n+5)-2-(-21-7n)=0
We add all the numbers together, and all the variables
-4(2n+5)-(-7n-21)-2=0
We multiply parentheses
-8n-(-7n-21)-20-2=0
We get rid of parentheses
-8n+7n+21-20-2=0
We add all the numbers together, and all the variables
-1n-1=0
We move all terms containing n to the left, all other terms to the right
-n=1
n=1/-1
n=-1

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