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2.5+3(5-2.1p)=-13.37
We move all terms to the left:
2.5+3(5-2.1p)-(-13.37)=0
We add all the numbers together, and all the variables
3(-2.1p+5)+2.5-(-13.37)=0
We add all the numbers together, and all the variables
3(-2.1p+5)+15.87=0
We multiply parentheses
-6p+15+15.87=0
We add all the numbers together, and all the variables
-6p+30.87=0
We move all terms containing p to the left, all other terms to the right
-6p=-30.87
p=-30.87/-6
p=5+0.87/6
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