10x+21=13

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Solution for 10x+21=13 equation: 



10x+21=13

We move all terms to the left:

10x+21-(13)=0

We add all the numbers together, and all the variables

10x+8=0

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

10x=-8

x=-8/10

x=-4/5

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