Question

Thực hiện phép tính

4 2/5+2 3/7- 2 2/5 +5 4/7 đây là phép tính hỗn số giúp mình ngay nhé xin cảm ơn

Answer 1

\(4\frac{2}{5}+2\frac{3}{7}-2\frac{2}{5}+5\frac{4}{7}\)

\(=\left(4\frac{2}{5}-2\frac{2}{5}\right)+\left(2\frac{3}{7}+5\frac{4}{7}\right)\)

\(=2+8\)

=10

Answer 2

4 2/5 + 2 3/7 - 2 2/5 + 5 4/7

= 22/5 + 17/7 -12/5 + 39/7

= ( 22/5 - 12/5 ) + ( 17/7 + 39/7 )

= 2 + 8 

= 10

Answer 3

\(4\frac{2}{5}+2\frac{3}{7}-2\frac{2}{5}+5\frac{4}{7}\)

=(4+2-2+5)+(\(\frac{2}{5}+\frac{3}{7}-\frac{2}{5}+\frac{4}{7}\))

=\(9+\frac{7}{7}\)

=10

Answer 4

=22/5 +17/7-12/5+39/7

=22/5-12/5+17/7+39/7

=2+8

=10