1.20% x 4,5=90%=90/100
disederhanakan=9/10
2.4a:(2b:2c)xb/a
20:(4:1)x2/5
20:4 x 2/5
5 x2/5
= 5/1 x2/5
10/5,disederhanakan
=2/1
jadi hasilnya 2
1. 20% × 4, 5 = 20/100 × 4,5
= 0,9
2. 4a ÷ (2b:2c) × b/a =
4x5 ÷ (2×2 : 2×1/2) × 2/5 =
20 ÷ (4 : 1) × 2/5 =
20 : 4 × 2/5 =
5 × 2/5 =
10/5 = 2
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1.20% x 4,5=90%=90/100
disederhanakan=9/10
2.4a:(2b:2c)xb/a
20:(4:1)x2/5
20:4 x 2/5
5 x2/5
= 5/1 x2/5
10/5,disederhanakan
=2/1
jadi hasilnya 2
1. 20% × 4, 5 = 20/100 × 4,5
= 0,9
2. 4a ÷ (2b:2c) × b/a =
4x5 ÷ (2×2 : 2×1/2) × 2/5 =
20 ÷ (4 : 1) × 2/5 =
20 : 4 × 2/5 =
5 × 2/5 =
10/5 = 2