tolong dijawab yang dilingakrin

a. 2 2/7 x 3/8 + 1 3/4
= (16/7 x 3/8) + 7/4
= (48/56) + 7/4
=6/7+ 7/4
= 24/28 + 49/28
= 73/28
= 2 17/28

d.9 1/3 - 4 1/6 x 2 1/10
= 28/3 - (25/6 x 21/10)
=28/3 - (525/60)
= 28/3 - (35/4)
= 112/12 - 105/12
= 7/12

3a) 2 2/7 x 3/8 + 1 3/4
=16/7 x 3/8 +7/4
=6/7 + 7/4
=24/28 + 49/28
=63/27
=2 17/28

3d)) 9 1/3-4 1/6 x 2 1/10
=28/3 - 25/6 x 21/10
=28/3 - 35/4
=112/12-105/12
=7/12