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?

Substitute n = −2 into both sides of the equation. The left side is 1.4(−2) + 2 = −2.8 + 2 = −0.8, and the right side is 2(−2) + 3.2 = −4 + 3.2 = −0.8. The last line is −0.8 = −0.8, choice B.

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