40(r+180)=780

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Solution for 40(r+180)=780 equation: 



40(r+180)=780

We move all terms to the left:

40(r+180)-(780)=0

We multiply parentheses

40r+7200-780=0

We add all the numbers together, and all the variables

40r+6420=0

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

40r=-6420

r=-6420/40

r=-160+1/2

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