21x-12+8x=10+9

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Solution for 21x-12+8x=10+9 equation: 



21x-12+8x=10+9

We move all terms to the left:

21x-12+8x-(10+9)=0

We add all the numbers together, and all the variables

21x+8x-12-19=0

We add all the numbers together, and all the variables

29x-31=0

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

29x=31

x=31/29

x=1+2/29

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