0.65x+0.25(400-x)=0.50*400

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Solution for 0.65x+0.25(400-x)=0.50*400 equation: 



0.65x+0.25(400-x)=0.50*400

We move all terms to the left:

0.65x+0.25(400-x)-(0.50*400)=0

We add all the numbers together, and all the variables

0.65x+0.25(-1x+400)-200=0

We multiply parentheses

0.65x-0.25x+100-200=0

We add all the numbers together, and all the variables

0.4x-100=0

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

0.4x=100

x=100/0.4

x=250

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