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4.21(v-19)=-4.21
We move all terms to the left:
4.21(v-19)-(-4.21)=0
We add all the numbers together, and all the variables
4.21(v-19)+4.21=0
We multiply parentheses
4.21v-79.99+4.21=0
We add all the numbers together, and all the variables
4.21v-75.78=0
We move all terms containing v to the left, all other terms to the right
4.21v=75.78
v=75.78/4.21
v=18
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