20x+22x=420

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Solution for 20x+22x=420 equation: 



20x+22x=420

We move all terms to the left:

20x+22x-(420)=0

We add all the numbers together, and all the variables

42x-420=0

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

42x=420

x=420/42

x=10

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