Question

Tolong bantuan nya, hasilnya ubah
ke dalam pecahan biasa:)

1) 1/2 - 0,3+ 3/4 - 0,75 + 3,3 +1,25 -1

2)0,5+ 3,5 - 2/5 - 3/4 + 1,2 -0.4

Answer 1

1)
1/2 - 0,3+ 3/4 - 0,75 + 3,3 +1,25 -1
= 1/2 - 3/10 - 75/100 + 33/10 + 125/100 - 1 (jadiin per 100 semua)
= (50/100 - 30/100) - 75/100 +( 330/100 + 125/100) - 100/100
=  20/100 - 75/100 + (455/100 - 100/100)
= 20/100 - 75/100 + 355/100
= 300/100
= 3

2)
0,5+ 3,5 - 2/5 - 3/4 + 1,2 -0.4
= 5/10 + 35/10 - 2/5 - 3/4 + 12/10 - 4/10
= ( 20/40 + 140/40) - 16/40 - (30/40 + 48/40) - 16/40
= 160/40 - 16/40 - 78/40 - 16/40
= 50/40
= 5/4