Question

помогите решить пж)
а) 8 3/17 * 5 1/4 + 3 14/17 * 5 1/4=
б) 3 4/13 * 15 3/41 - 3 4/13 * 2 3/41=

Answer 1

1)5 1/4*(8 3/17+3 14/17)=63
2)43

Answer 2

а)8 3/17×5 1/4+3 14/17×5 1/4=
=139/17×21/4+65/17×21/4=
=21/4(139/17+65/17)=
21/4×204/17=21/1×51/17=21/1×3/1=63
б)3 4/13×15 3/41-3 4/13×2 3/41=
=43/13×618/41-43/13×85/41=
=43/13×(618/41-85/41)=
=43/13×533/41=43