Question

bài 1: tính

a, 6/7 : (1/2 x 3/4 ) - 5/8=                                                                     b, 34-2 : (3/5 - 1/2)=

Ai làm nhanh mình tik, giải rõ bài trên giúp mình , mình đang cần gấp , cảm ơn

 

Answer 1

\(\frac{6}{7}:\left(\frac{1}{2}\cdot\frac{3}{4}\right)-\frac{5}{8}\)

\(\frac{6}{7}:\frac{3}{8}-\frac{5}{8}\)

\(\frac{6}{7}\cdot\frac{8}{3}-\frac{5}{8}\)

\(\frac{16}{7}-\frac{5}{8}\)

=93/56

b.34-2x10

34-20=14

Answer 2

a, 6/7 : (1/2 x 3/4 ) - 5/8

=\(\frac{6}{7}:\frac{3}{8}-\frac{5}{8}\)  

\(=\frac{6}{7}x\frac{8}{3}-\frac{5}{8}\)

\(=\frac{16}{7}-\frac{5}{8}\)

=

Answer 3

a) \(\frac{6}{7}:\left(\frac{1}{2}\cdot\frac{3}{4}\right)-\frac{5}{8}\)

\(=\frac{6}{7}:\frac{3}{8}-\frac{5}{8}\)

\(=\frac{16}{7}-\frac{3}{8}\)

\(=\frac{107}{58}\)

Answer 4

b) \(34-2:\left(\frac{3}{5}-\frac{1}{2}\right)\)

\(=34-2:\frac{1}{10}\)

\(=32-20\)

\(=12\)