Question

выполните деиствие
1) 1-(5/9+1/4)
2) 3-(1/2+1/7)
3) 4-(2/5+7/18)

Answer 1

1) 1-(5/9+1/4)=1-(20/36+9/36)=1-29/36=7/36
2) 3-(1/2+1/7)=3-(7/14+2/14)=3-9/14=2 5/14
3) 4-(2/5+7/18)=4-(36/90+35/90)=4-71/90=3 19/90