1. 3 2/5 + 1 3/4 – 2 1/2 =

Jawaban:

1. 17/20

2. 5/20

maff kalo ngak pakai caranya ya

maff juga kalau salah ya

1. 17/5 + 7/4 – 5/2

= 68/20 + 35/20 – 50/20

53/20

2 13/20

2. 5 1/4 – 3 1/2 + 2 7/8 =

= 21/4 – 7/2 + 23/8

42/8 – 28/8 + 23/8

37/8

4 1/8

3. 4 1/5 x 3 1/2 : 2 1/4

= 21/5 × 7/2 : 9/4

21/5 × 7/2 ×4/9

588/90

6 48/90

6 24/45

4. 6 2/5 + 2 1/2 x 3 1/4 =

= 32/5 +5/2 × 13/4

32/5 + 65/8

256/40 + 325/40

581/40

14 21/40

5. ( 2 3/4 – 1 1/8 ) x 3 1/2 : 2 2/7 =

=( 11/4 – 9/8) × 7/2 : 16/7

( 22/8- 9/8) × 7/2 : 16/7

( 13/8) ×7/2: 16/7

13/8× 7/2×7/16

637/ 256

2 125/256