121^3x+3=121^x-4

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Solution for 121^3x+3=121^x-4 equation: 



121^3x+3=121^x-4

We move all terms to the left:

121^3x+3-(121^x-4)=0

We get rid of parentheses

121^3x-121^x+4+3=0

We add all the numbers together, and all the variables

121^3x-121^x+7=0

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

121^3x-121^x=-7

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