40x+50x=400

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Solution for 40x+50x=400 equation: 



40x+50x=400

We move all terms to the left:

40x+50x-(400)=0

We add all the numbers together, and all the variables

90x-400=0

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

90x=400

x=400/90

x=4+4/9

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