jawab dengan bener ya?!?!

1) 3 ³/5 + 7/8
= 18/5 + 7/8
= 144/40 + 35/40
= 184/40
= 4 24/40
= 4 3/5
= 4 (D)

2) 3⅓ + 2⁴/5
= 10/3 + 14/5
= 50/15 + 42/15
= 92/15
= 6 2/15
= 6 (A)

3) 0,4 + 0,9
= 1,3
taksiran = 1

4) 3,3 - 1,7
= 1,6
taksiran = 2

5) 2 ²/5 - 1 ³/5
= 12/5 - 8/5
= 4/5
taksiran = 1