Answer:
3 1/2
Step-by-step explanation:

sorry it just takes me forever to write the explanation
Answer:
8x(10^-5)
Step-by-step explanation:
Answer:
1cm=5m or 3:1500
Step-by-step explanation:
Answer:
x = 20
Step-by-step explanation:
x/4 - 1 = 4
Since to find x it has to be made the the subject
x/4 = 4+1
x/4 = 5
x = 5×4
x =20
Use the distributive property to simplify.

Group like terms and add/subtract.