ijohnh14
03.03.2021 •
Mathematics
Multiples of 7 between 20 and 40
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Ответ:
21, 28 and 35
Step-by-step explanation:
Multiples of 7 between 20 and 40;
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
Ответ:
Step-by-step explanation:
By elimination method,
x+y=15
-x+y=5
2y=20
i.e y=10
Now,
x+y=15
or, x+10=15
or, x=5