Question

ВЫЧИСЛИТЬ 7/9-1/18
2/5+3 1/2
3/10 * 4
27/50:9

Answer 1

7/9-1/18= 7/9х2-1/18=49/18-1/18= 48/18=8/3
2/5+3 1/2= 2/5 х 2+7/2 х 5=4/10+14/10=18/10=9/5
3/10х4= 6/5
27/50:9=27/50: 1/9 = 3/50

Answer 2

13/18
2 1/5 = 2.2
3/50=0.06