Question

hey guys can you answer these questions I will thank you and mark as brainlist ,answer it quick and correct ​

Answer 1

Answer:

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Answer 2

Answer:

2)

1. 3x = 21

x= 3/21

x = 7

2. 3x + 5 =15

= 3x = 15 - 5

= 3x = 10

= x = 3/10

3. x/2 + 7= 4

= x/2 = 4-7

= x/2 = 3

= x = 3×2

= x = 6