SOLUTION: -6p - 21 = 3p - 12
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Question 507873: -6p - 21 = 3p - 12
Found 2 solutions by stanbon, Maths68:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
-6p - 21 = 3p - 12
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Add 6p to both sides
Add 12 to both sides
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9p = -9
p = -1
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Cheers,
Stan H.
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Answer by Maths68(1474) (Show Source): You can put this solution on YOUR website!
-6p - 21 = 3p - 12
Add 21 both sides of the above equation
-6p - 21+21 = 3p - 12 + 21
Cancel out 21 from left hand side
-6p = 3p + 9
Subtract 3p from both sides of the above equation
-6p -3p = 3p - 3p + 9
Cancel out 3p from right hand side
-9p =9
Divide by -9 both sides of the above equation
-9p/-9 =9/-9
Cancel out 9 from both sides
p=-1
Check
Put the value of p in original equation
-6p - 21 = 3p - 12
-6(-1) - 21 = 3(-1) - 12
6-21=-3-12
-15=-15
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