Answer:
4) d = 1
5) w = 11
6) q = 120
Explanation:
4)

Adding 5 on both the sides ,


Dividing both the sides by 9 ,


5)

Substracting 6 from both the sides ,


Dividing both the sides by -3 ,


6)

Adding 19 on both the sides ,


Multiplying both the sides by 8 ,

