Addition to cancel −18: To find the value of p, we need to isolate p on one side of the equation. We can do this by adding 18 to both sides of the equation to cancel out the −18 on the left side.Calculation: p−18+18=3+18
Simplified equation: After performing the addition, we get the simplified equation: p=3+18
Add numbers to find p: Now we add the numbers on the right side to find the value of p.Calculation: p=21
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