Question

Ai giúp cho mk bài 3 vs ạ mk hứ a cho5 sao!!

Answer 1

câu số mấy?

Answer 2

câu 17 à

 

Answer 3

a,=-3/4.(5/11+6/11)+7/4

=-3/4.1+7/4

=-3/4+7/4

=1

Answer 4

b,=-3/5+2:5/2-(6/5-1/4)

=-3/5+2:5/2-19/20

=-3/5+4/5-19/20

=1/5-19/20

=-3/4

Answer 5

Mn ơi giúp mk vs mk đánh giá 5 sao

Answer 6

Câu 13 đúng ko

Answer 7

a)\(\dfrac{-3}{4}\).\(\dfrac{5}{11}\)+\(\dfrac{-3}{4}\).\(\dfrac{6}{11}\)+1\(\dfrac{3}{4}\)

\(\dfrac{-3}{4}\).(\(\dfrac{5}{11}\)+\(\dfrac{6}{11}\))+1\(\dfrac{3}{4}\)

\(\dfrac{-3}{4}\).1+1\(\dfrac{3}{4}\)

1

 

Answer 8

b,=-3/5+2:5/2-(6/5-1/4)

=-3/5+2:5/2-19/20

=-3/5+4/5-19/20

=1/5-19/20

=-3/4

Answer 9

Xin lỗi mk lỡ tay bấm reload trang nên bay câu trả lời r :((((