Tayyy7
Tayyy7
10-04-2017
Mathematics
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Mud2018
Mud2018
15-04-2017
11t+19s= 1970
t=3s-10
t=?
11(3s-10)+19s=1970
33s-110+19s=1970
52s=2080
s=40
t=110 because 19*40=760 1970-760=1210 1210/11=110
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