21sav
21sav
06-12-2016
Mathematics
contestada
-84(-3 - 5p)=-176 help please
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Hadizaali14
Hadizaali14
06-12-2016
-84 = 3(5n + 2)
Multiply everything in the parenthesis.
-84 = 3(5n + 2)
3*5n + 3*2
-84 = 15n + 6
Subtract 6 from both sides
-84 = 15n + 6
-6 -6
-90 = 15n
Divide 15 from both sides
-90 = 15n
--------------
15 15
-6 = n
-6 is your answer.
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andyharmsen
andyharmsen
06-12-2016
First divide both sides by the coefficient, -84, to leave (-3 - 5p) = -176/-84 = 176/84
Then add 3 to both sides, which gives -5p = (176/84) + 3 = 62/21 + 3
Now divide both sides by the coefficient -5:
p = (125/21)/-5 = -25/21
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