3u+7=-9u+49

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Solution for 3u+7=-9u+49 equation: 



3u+7=-9u+49

We move all terms to the left:

3u+7-(-9u+49)=0

We get rid of parentheses

3u+9u-49+7=0

We add all the numbers together, and all the variables

12u-42=0

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

12u=42

u=42/12

u=3+1/2

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