72=4(5)^x+12

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Solution for 72=4(5)^x+12 equation: 



72=4(5)^x+12

We move all terms to the left:

72-(4(5)^x+12)=0

We get rid of parentheses

-45^x-12+72=0

We add all the numbers together, and all the variables

-45^x+60=0

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

-45^x=-60

x=-60/1

x=-60

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