3X+5y=140

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Solution for 3X+5y=140 equation: 



3X+5X=140

We move all terms to the left:

3X+5X-(140)=0

We add all the numbers together, and all the variables

8X-140=0

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

8X=140

X=140/8

X=17+1/2

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