с дз поставлю по матимаите

Пошаговое объяснение:

1) 3/4 +5/8 = (6+5)/8= 11/8 = 1 3/8

2) 2/5 + 7/15 = (6+7)/15= 13/15

3) 7/16 +1/4 = (7+4)/16= 11/16

4) 2/7 +1/3 = (6+7)/21= 13/21

5) 5/18 + 2/3 = (5+12)/18= 17/18

6) 5/6+ 7/8 = ( 20+21)/24 = 41/24 = 1 17/24

7) 5/6 + 2/9 = (15+4)/18= 19/18 = 1 1/18

8) 1/4+2/5 = (5+8)/20= 13/20

1) (7/15 - 1/6)+ 2/5= (14-5)/30 + 2/5= 9/30+2/5= (9+12)/30= 21/30= 7/10

2) (3/8- 1/9) + 25/36= (27- 8)/72+25/36= 19/72+25/36= (19+50)/72=69/72

3) (8/9- 5/6)+2/3 = (16 -15)/18 + 2/3= 1/18 + 2/3= (1+12)/18= 13/18

4) (7/8 - 13/20)+9/10 = (35-26)/40+ 9/10= 9/40 +9/10=(9+36)/40=45/40= 1 1/8

5) (7/18- 1/12)+5/6= (14-3)/36 + 5/6= 11/36+5/6= (11+30)/36=41/36= 1 5/36

6) (3/4 - 8/15) +17/20= (45-32)/60 + 17/20= 13/60+17/20= (13+51)/60=

=64/60= 1 1/15

Первое фото — первые 8 заданий

Второе фото — вторые 6 заданий