Chuck187
Answered

The solution is n = –2 verified as a solution to the equation 1.4n + 2 = 2n + 3.2. What is the last line of the justification?

A0.8 = 0.8
B–0.8 = –0.8
C3 = 3
D–3 = –3

Verified Answer :

zoeli

1.4(-2)+2=2(-2)+3.2
-0.8=-0.8

calculista

we have

\(1.4n + 2 = 2n + 3.2\)

we know that

If \(n=-2\) is a solution of the equation

then

the value of n must satisfied the equation

Substitute the value of n in the equation

\(1.4*(-2) + 2 = 2*(-2) + 3.2\)

\(-2.8 + 2 = -4 + 3.2\)

\(-0.8 = -0.8\) ----> the equation is true

so

The value of n is a solution of the equation

therefore

the answer is the option B

\(-0.8 = -0.8\)


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