Presumably it means question 3 which has not been given therefore it follows that to answer it is impossible.
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q/31 = 3 q/31 = 3/1 Cross Multiply: 1q = 31(3) q = 93
When: p=12 and q=3 Then when: p=76 and so q=19 Because: 12/3=4 and 76/19=4
q = 3
7q = 21 q = 3
-q-11=2q+4 you would subtract 4 from both sides 4 and -4 cancel out and -11-4= -15 then you get -q-15=2q then you would add Q(1) to both sides (-q and q cancel out) then u get -15=3q thn u divide 3 to both sides (3 and 3 become q) then u get q=-5