60*2x+40*2x=4200

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Solution for 60*2x+40*2x=4200 equation: 



60*2x+40*2x=4200

We move all terms to the left:

60*2x+40*2x-(4200)=0

Wy multiply elements

120x+80x-4200=0

We add all the numbers together, and all the variables

200x-4200=0

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

200x=4200

x=4200/200

x=21

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