Question

tính 

a,  -5/18 + 5/9 - 11/36

b,  -39/44 : 13/11

Answer 1

Giải

a)-5/18+5/9-11/36

=(-10/36)+20/36-11/36

=-1/36

b)-39/44:13/11

=-39/44.11/13

=-3/4

Answer 2

a) \(\frac{-5}{18}+\frac{5}{9}-\frac{11}{36}\)

= \(-\frac{10}{36}+\frac{20}{36}-\frac{11}{36}\)

= \(-\frac{1}{36}\)

b) \(-\frac{39}{44}:\frac{13}{11}\)

= \(-\frac{39}{44}.\frac{11}{13}\)

= \(\frac{\left(-39\right).11}{44.13}\)

= \(\frac{\left(-3\right).13.11}{11.4.13}\)

= \(-\frac{3}{4}\)

Answer 3

trả lời 

câu 1 \(\frac{-1}{36}\)

câu 2 \(\frac{-3}{4}\)

hok tốt