Question

Solve the equation a)3(n-1)=21 .b)y+7=8 ​

Answer 1

Step-by-step explanation:

3(n-1)=21

3n-3=21/3

3n=21+3

3n=24

n=24/3

n=7

Answer 2

Answer:

a) n=7 b)y=1

Step-by-step explanation:

a) 3(n-1) =21. b) y+ 7= 8

3n -3 = 21. y = 8-7

3n = 21+3. y = 1

3n = 24

n= 24/3

n= 7