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8x+3(0.5x)=1300
We move all terms to the left:
8x+3(0.5x)-(1300)=0
We add all the numbers together, and all the variables
8x+3(+0.5x)-1300=0
We multiply parentheses
8x+0x-1300=0
We add all the numbers together, and all the variables
9x-1300=0
We move all terms containing x to the left, all other terms to the right
9x=1300
x=1300/9
x=144+4/9
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