Solving equations with variables on one side, both sides

 $13c\ +\ 8\ =\ 47$  

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CCSS.7.EE.B.4A

 $\frac{u}{9}-4=3$  

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CCSS.7.EE.B.4A

 $-3x+5+9x=-19$  

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CCSS.8.EE.C.7B

 $-8f+2\left(-2f+4\right)=68$  

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CCSS.8.EE.C.7B

 $5x-11=8x+7$  

 $10m+7=5m-3$  

 $7h-17-3h=7h-35$  

 $13e-12+2e=10e+3$