Question

Which equation is true when n = 4?

Answer 1

The answer is D

Explanation:

2(n+6)=20

2 times n equals 2n

2 times 6 equals 12

so, 12 plus 2n equals 20

make 2n the subject of formula so, 2n= 20-12 (the sign will change when coming past the (=) sign

2n= 8

n=2/8

n=4