tolong kk isi no 7 N 8 soalnya bsk mw d kumpulin makacihhhh dan sma caranya yhhhh

7. 3,2 - 2,6 × 0,175
= 32/10 - (26/10 × 175/1000)
= 16/5 - (13/5 × 7/40)
= 16/5 - 91/200
= 640/200 - 91/200
= 549/200
= 2 149/200
8. 3⅓ × 1½ : 175% = 10/3 × 3/2 : 175/100
= 10/3 × 3/2 : 7/4
= 40/12 × 18/12 : 21/12
= 720/144 × 12/21 → bagi coret
= 720/252
= 20/7
= 2 6/7