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8(-4.2-0.4y)+y=-16
We move all terms to the left:
8(-4.2-0.4y)+y-(-16)=0
We add all the numbers together, and all the variables
8(-0.4y-4.2)+y-(-16)=0
We add all the numbers together, and all the variables
y+8(-0.4y-4.2)+16=0
We multiply parentheses
y+0y-33.6+16=0
We add all the numbers together, and all the variables
2y-17.6=0
We move all terms containing y to the left, all other terms to the right
2y=17.6
y=17.6/2
y=8+1/1.25
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