Jawaban:
1.) 2,88
2.) 1,5
3.) 38,5
4.) 7,0
5.) 22,4
Penjelasan dengan langkah-langkah:
1.) 1 4/5 x (0,4 : 1/4)
= 9/5 × (4/10 : 1/4)
= 9/5 x (4/10 x 4/1)
= 9/5 x 16/10
= 144/50 (dikali 2)
= 288/100
= 2,88
2.) 75% : (0,5 x 1/5)
= 75/100 : (5/10 x 1/5)
= 75/100 : 5/10
= 75/100 x 10/5
= 750/500 (dibagi 50)
= 15/10
= 1,5
3.) 3 1/2 x 2,75 : 25%
= 7/2 x 275/100 : 25/100
= 1925/200 : 25/100
= 1925/200 x 100/25
= 192500/5000
= 1925/50 (dibagi 5)
= 385/10
= 38,5
4.) 4 2/5 : 2.2 x (1 3/4 : 50%)
= 22/5 : 22/10 x (7/4 : 50/100)
= 22/5 : 22/10 x (7/4 x 100/50)
= 22/5 : 22/10 x 700/200
= 22/5 x 10/22 x 700/200
= 220/110 x 700/200
= 2/1 x 7/2
= 14/2 (dikali 5)
= 70/10
= 7,0
5.) 2,8 : (20% x 1 1/4) : 0,5
= 28/10 : (20/100 x 5/4) : 5/10
= 28/10 : 100/400 : 5/10
= 28/10 x 400/100 : 5/10
= 11200/1000 : 5/10
= 112/10 : 5/10
= 112/10 x 10/5
= 1120/50 (dibagi 5)
= 224/10
= 22,4
Jawaban:
4818291;_82!$81+8310$+22
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