10x+30x=90

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Solution for 10x+30x=90 equation: 



10x+30x=90

We move all terms to the left:

10x+30x-(90)=0

We add all the numbers together, and all the variables

40x-90=0

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

40x=90

x=90/40

x=2+1/4

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