Question

A) 2/3 divided by 1/4 b) 7/5 multiply by 8 c) 2/5-1/3 d)3/10+2 7/12

Answer 1

`a)\\(2)/(3)/(1)/(4)=(2)/(3)\cdot(4)/(1)=(8)/(3)=2(2)/(3)\\\\b)\\(7)/(5)\cdot8=(56)/(5)=11(1)/(5)\\\\c)\\(2)/(5)-(1)/(3)\\\text{common denominator is (5)(3) = 15}\\\\(2\cdot3)/(5\cdot3)-(1\cdot5)/(3\cdot5)=(6)/(15)-(5)/(15)=(1)/(15)\\\\d)\\(3)/(10)+2(7)/(12)\\\text{common denominator is 60}\\\\(3\cdot6)/(10\cdot6)+2(7\cdot5)/(12\cdot5)=(18)/(60)+2(35)/(60)=2(53)/(60)`