Question

solve the given equation. a. 2 (x+4 ) = 12. b. 3 (n-5) = 21​

Answer 1

Answer:

a.x=2

b.n=12

Step-by-step explanation:

a.(2*x)+(2*4)=12

2x+8=12

2x=12-8=4

2x=4

x=2

b.(3*n)-(3*5)=21

3n-15=21

3n=21+15

3n=36

n=12

Answer 2

Step-by-step explanation:

=> 2(x+4)=12

=> 2x+8=12

=> 2x= 12-8

=> 2x =4

=> x= 4/2

=> x= 2

b. 3( n - 5 ) =21

=> 3n- 15 =21

=> 3n= 21+15

=> n= 36/3

=> n= 12