When solving an equation, Carmen's first step is shown below. Which property justifies Carmen's first step? \text{Original Equation:}

Original Equation:

-2(7x^2-1)+6 =

−2(7x

2

−1)+6=

\,\, 8x^2-10

8x

2

−10

\text{First Step:}

First Step:

(7x^2-1)-3 =

(7x

2

−1)−3=

\,\, -4x^2+5

−4x

2

+5

4

step-by-step explanation:

17.08

correct me if i am wrong.

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

5 + 8 +7 + 4 + 0 +1 = 25

step-by-step explanation: