Question

сложите дроби предварительно сократив их :
а) 6\15 и 2\25
б) 1\45 и 2\36
в) 10\120 и 60\150
г) 12\360 и 20\480

Answer 1

а) 6/15 + 2/25 = 2/5 + 2/25 = 10/25 + 2/25 = 12/25

б) 1/45 + 2/36 = 1/45 + 1/18 = 2/90 + 5/90  = 7/90

в) 10/120 + 60/150 = 1/12 + 2/5 = 5/60 + 24/60 = 29/60

г) 12/360 + 20/480 = 1/30 + 1/24 = 4/120 + 5/120 = 9/120 = 3/40

Answer 2

А) = 2/5+ 2/25= 10/25+2/25 = 12/25
Б) =1/45+1/18=2/90+5/90=7/90
В)=1/12+2/5=5/60+24/60=29/60
Г) =1/30+1/24=4/120+5/120=9/120=3/40