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?

 1.4n + 2 = 2n + 3.2

substitute the solution n = -2 into the equation 

 1.4n + 2 = 2n + 3.2

 1.4(-2) + 2 = 2(-2) + 3.2

-2.8 + 2 = -4 + 3.2

-0.8 = - 0.8 

n = -2 makes the equation becomes true

so

Yes, n = -2 is the solution of the equation

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find out the value of b

step-by-step explanation:

use formula for the circle a=3.14

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