Question

помогите под буквой а б в номер 123

Answer 1

a ) y*(3/8+4/9-5/12)
b) m*(1 5/12+2 7/18-1 2/9)
c)a*(4/7+5/21-2/3)
Вот так както!

Answer 2

а)3/8у+4/9у-5/12у=27/72у+32/72у-30/72у=29/72у
б)1 5/12m+2 7/18m-1 2/9m=17/12m+4/18m-11/9m=102/72m+172/72m-88/72m=186/72m=2 42/72m=2 14/24m=2 7/12m