1) 4:2 1/5 - (1/7x1/4)? 2) 12 3/4 - 4 1/3 : 3/4 ? 3) 4/7 (3/8x2 1/2)+3/4 ? mohon bantuannya untuk 3 soal tersebut . terima kasih

Jawabannya:

Mapel. : Matematika
Bab. : Operasi Pecahan
Sub Bab : Pecahan

Pembahasan:

1). 4 : 2 1/5 - (1/7 × 1/4)
= 4/1 : 11/5 - 1/28
= 4/1 × 5/11 - 1/28
= 20/11 - 1/28
= 1,81 - 0,035
= 1,775 → Jwbnya

2). 12 3/4 - 4 1/3 : 3/4
= 51/4 - 13/3 : 3/4
= 51/4 - 13/3 × 4/3
= 51/4 - 52/9
= 459/36 - 208/36
= 251/36
= 6 35/36 → Jwbnya

3). 4/7. (3/8 × 2 1/2) + 3/4
= 4/7. (3/8 × 5/2) + 3/4
= 4/7. 15/16 + 3/4
= 60/112 + 3/4
= 60/112 + 84/112
= 144/112
= 9/7
= 1 2/7 → Jwbnya

# Maaf Kalo Salah