vnfrancis3716
25.12.2019 •
Mathematics
Malloy has 2/6 cups of sugar and she adds 4/5 cups how much is in total
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Ответ:
x+y=7(2)
from (2)
y=7-x(3)
put (3) into (1)
2x-(7-x)=8
2x-7+x=8
2x+x=8+7
3x=15
x=5(4)
put (4) into (2)
x+y=7
5+y=7
y=7-5
y=2
Hope it helps c: