Question

Vă rog ajutați-mă! Măcar a si b sau a​

Answer 1

Explicație pas cu pas:

a) 5/8+7/6=(3×5)/24+(7×4)/24=(15+28)/24=43/24

7/12-3/8=(2×7)/24-(3×3)24=(14-9)/24=5/24

5+3/5=(5×5)/5+3/5=(25+3)/5=28/5

2-2/7=(7×2)/7-2/7=(14-2)/7=12/7

5/9+7/6=(6×5)/54+(7×9)/54=(30+63)/54=93/54

11/18-5/12=(2×11)/36-(3×5)/36=(22-15)/36=7/36

7/12:3+5/9:4+11/18:2=

7/12×1/3+5/9×1/4+11/18×1/2=

7/36+5/36+11/36=(7+5+11)/36=23/36