Kerjakanlah soal berikut dengan cara. 1. (15 8/5 : 2 1/12) - (2 1/2 x 3 3/10) = ... 2. (-3/5 - 2/3) : (1/2 - (-3/5) ) = ... 3. -3 2/3 + 3/10 x (-4 1/6) + 1 3/4

1.
= (83/5 ÷ 5/2) - (5/2 × 33/10)
= (83/5 × 2/5) - (1/2 × 33/2)
= 166/25 - 33/4
= -166/100
= -1,61
2.
= (-19/15) ÷ (1/2 + 3/5)
= (-19/15) ÷ 11/10
= -19/15 × 10/11
= -19/3 × 2/11
= -38/33
= 1 5/33
3.
= -8/2 + 3/10 × (-25/6) + 7/4
= -8/2 - 1/2 × 5/2 + 7/4
= -8/2 - 5/4 + 7/4
= -7/2
= -3,5
salah maaf....