Question

помогите пж, 1/2+1/5,1/5+3/10,1/10+1/2,2/5+1/10.​

Answer 1

Ответ:

1/2+1/5=1/2*5+1/5*2=5/10+2/10=7/10

1/5+3/10=1/5*2+3/10=2/10+3/10=5/10=1/5

1/10+1/2=1/10+1/2*5=1/10+5/10=6/10=3/5

2/5+1/10=2/5*2+1/10=4/10+1/10=5/10=1/2