Question

Solve the equation. Then check your solution.

–4.2 = –2.1n
a. 2
c. 2.1
b. –2
d. –6.3

Answer 1

a. 2

negative times a positive equals a negative

n=2

Answer 2

To solve for n, we need to isolate the variable on one side of the equation.

Starting with:

-4.2 = -2.1n

We can divide both sides by -2.1:

-4.2 / (-2.1) = n

n = 2

To check, we can substitute 2 back into the original equation:

-4.2 = -2.1(2)

-4.2 = -4.2

Since both sides are equal, our solution of n = 2 is correct.

Therefore, the answer is a. 2.