0.4x-0.75x+0.5x=3

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Solution for 0.4x-0.75x+0.5x=3 equation: 



0.4x-0.75x+0.5x=3

We move all terms to the left:

0.4x-0.75x+0.5x-(3)=0

We add all the numbers together, and all the variables

0.15x-3=0

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

0.15x=3

x=3/0.15

x=20

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