Question

.Twice a number is equal to negative four. Which equation could be used to find the number?

2 n = 4
2 n = -4
2 n - 4
2 n = -4 n

Answer 1

the second one would be your answer 2n=-4

the equation without substitution would look like: 2(-2)=-4

Answer 2

the second one. 2n = -4.

we can easily see that 2*(-2) = 4.