Penjelasan dengan langkah-langkah:

1.) (5 6/7) + (6 1/2)

=> ({5}+ 6/7) + ([ 6] + 1/2)

=> ({35/6}+6/7) + ([12/2]+1/2)

=> (41/7) + (13/2)

=> (41/7 × 2/2) + (13/2 × 7/7)

=> (82/14) + ( 91/14)

=> (173/14)

2.) caranya sama seperti nomer 1

(3 3/4) - (2 1/2)

=> ( 12/4 + 3/4) - (4/2 + 1/2)

=> 15/4 + 5/2

( disamakan penyebutnya)

=> 15/4 + (5/2 × 2/2)

=> 15/4 + (10/4)

=> 25/4

3.) 5 3/6 + 3 1/2 + 4 1/4

=> (30/6 + 3/6) + (6/2 + 1/2) + (16/4 + 1/4)

=> (33/6) + (7/2) + (17/4)

=> (33/6) + (7/2 × 3/3) + (17/4 × 0,5/0,5)

=> (33/6) + (21/6) + (25,5/6)

=> agar tidak ada desimal maka kalikan 2 semuanya

=> (54/6 + 25,5/6) × 2/2

=> (79,5/6) × 2/2

=> (159/12)

4.) (7 5/10 - 5 7/8) + 2 3/5

=> ( ( 70/10 + 5/10) - (40/8 + 7/8) ) focus ke itu dulu

=> ( (75/10) - (47/8) )

dengan disamakan penyebutnya

=> ( (75/10 × 8/8) - (47/8 × 10/10) )

=> ( (600/80) - (470/80) )

=> ( (130/80) ) + 2 3/5

=> ( (130/80) ) + ( 10/5 + 3/5)

=> ( (130/80) ) + ( 13/5)

=> ( (130/80) ) + (13/5 × 16/16)

=> ( (130/80) ) + (208/80)

=> (338/80) disederhanakan

=> 169/40

yg nomer 5 akan saya lanjut nanti

5.) ( (6 2/4) + (4 6/8) ) - 7 1/2

=> ( (6 2/4) + (4 6/8) ) focus ke itu dulu

=> ( ( 24/4 + 2/4) + (32/8 + 6/8) )

=> ( (26/4) + (38/8) ) disamakan penyebutnya

=> ( (26/4 × 2/2) + (38/8) )

=> ( (52/8) + (38/8) )

=> ( (90/8) )

=> ( (90/8) ) - 7 1/2

=> ( (90/8) ) - (14/2 + 1/2)

=> ( (90/8) ) - (15/2)

=> ( (90/8) ) - (15/2 × 4/4) disamakan penyebut

=> ( (90/8) ) - (60/8)

=> (30/8) di sederhanakan

=> (15/4)