tolong dibantu jawab dong

1) 3 (-2(3) + 6(2))
= 3 (-6 + 12)
= 3 × 6
= 18

2) (-a) × (-b)
= ab

3) -x/y² ÷ z /xy
= - x . xy
-------------
y² . z

= - x²y
----------
y²z

= - x²
---------
yz

4)3/2 - ¼ + ¹/6
= 18/12 - 3/12 + 2/12
= 17/12
= 1 5/12

5) 2/x . 5/y
= 10/xy