Предмет: Математика, автор: catartlalalal

1) 17/25 + 1/5.
2) 2/5 + 4/15.
3) 7/12 + 5/24.
4) 5/6 + 9/10.
5) 3/10 + 3/4.
6) 1/12 + 7/20.
7) 1/8 + 2/7.
8) 1/4 + 1/15.
9) 4/5 + 1/3.
Легко, вроде. Но я немного затрудняюсь в "8/15". Вы поняли. Просто... как это? Или что-то типа "Что больше: 3/10 or 8 15?".
( ͡° ͜ʖ ͡°) И спасибо за помощь).
Акхахах, ещё баллы какие-то. Это на подобии денег?

Ответы

Автор ответа: tamaraivanova5
0

1) 17/25+1/5=17/25+1/5*5=17/25+5/25=22/25

2) 2/5+4/15=2/5*3+4/15=6/15+4/15=10/15=2/3

3) 7/12+5/24=7/12*2+5/24=14/24+5/24=19/24

4) 5/6+9/10=5/6*10+9/10*6=50+54/60=104/60=1 44/60=1 22/30

5) 3/10+3/4=3/10*4+3/4*10=12/40+30/40=42/40=21/20

6) 1/12+7/20=1/12*20+7/20*12=20/240+84/240=104/240=52/120=26/60=13/20

7) 1/8+2/7=1/8*7+2/7*8=7/56+16/56=23/56

8) 1/4+1/15=1/4*15+1/15*4=15/60+4/60=19/60

9) 4/5+1/3=4/5*3+1/3*5=12/15+5/15=17/15


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