Question

Хелп  ми  сюрприз  внутри!

Answer 1

1) а) = 11/5 + 11/3 = 88/15 = 5•13/15
б) = 4•14/21 + 5•12/21 = 10•5/21
2) а) = 1•3/3 - 1/3 = 1•2/3
б) = 3•54/63 - 2•56/63 = 2•117/63 - 2•56/63 = 61/63
3) 1. 3•7/9-2/3=3•7/9-6/9=3•1/9
2. 3•7/9+3•1/9=6•8/9
Ответ:6•8/9
4). X+3•2/5=14•1/6
X=14•1/6-3•2/5
X=13•35/30-3•12/30
X=10•23/30

Answer 2

№1
2 1/5+3 2/3=11/5+11/3=(33+55)/15=88/15=5 13/15
4 2/3+5 4/7=14/3+39/7=(98+117)/21=215/21=10 5/21
№2
2-1/3=2/1-1/3=(6-1)/3=5/3
3 6/7-2 8/9=27/7-26/9=(243-182)/63=61/63
№3
3 7/9-2/3=34/9-2/3=(34-6)/=28/9
34/9+28/9=62/9= 6 8/9
№4
х+3 2/5=14 1/6
х=14 1/6-3 2/5=85/6-17/5=(425-102)/30=323/30=10 23/30
х=10 23/30
№5
(11 2/3-8 3/4)+(3 1/3+2 5/6)-4 7/12=2 2/3
11 2/3-8 3/4=35/3-35/4=(140-105)/12=35/12
3 1/3+2 5/6=10/3+17/6=(10+17)/6=27/6
35/12+26/6=(35+52)/12=87/12
87/12-55/12=32/12=8/3=2 2/3