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3 votes
Px+40=Qx+20

Check all that apply:
P=20 andQ=40
P=40 and Q=40
P=−20 and Q=-20
P=−40 and Q=20

1 Answer

6 votes
The first answer because if you put in 20 for P and 40 for Q the equation comes out to

20 + 40 = 40 + 20
if you simplify you get 60 = 60 which is a true statement

if you do the other ones out and input the given numbers for P and Q they don't come out evenly and dont equal each other
User KMV
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