Question

a)\(\frac{3}{4}+\frac{2}{3}+\frac{5}{12}\)

b)\(\frac{7}{8}-\frac{7}{16}-\frac{11}{32}\)

 

Answer 1

Quy đồng lên rồi tính bình thường

Answer 2

3+2+5   =10 

   12        12

Answer 3

a ) \(\frac{3}{4}+\frac{2}{3}+\frac{5}{12}\)

= \(\frac{17}{12}+\frac{5}{12}\)

= \(\frac{11}{6}\)

b ) \(\frac{7}{8}-\frac{7}{16}-\frac{11}{32}\)

= \(\frac{7}{16}-\frac{11}{32}\)

= \(\frac{3}{32}\)

Answer 4

a 3/4 + 2/3 + 5/12

=  9/12+8/12+5/12

=          22/12

b 7/8-7/16-11/32

  =28/32-14/32-11/32

=       3/32