Frank tried to solve an equation step by step.
\qquad\begin{aligned} -5&=5(d+4) \\ -5&...
Mathematics, 26.02.2020 03:11 seymani2
Frank tried to solve an equation step by step.
\qquad\begin{aligned} -5&=5(d+4) \\ -5&=5d+20&\green{\text{Step } 1} \\ 15&=5d&\blue{\text{Step } 2} \\ 3&=d&\purple{\text{Step } 3} \end{aligned}
−5
−5
15
3
=5(d+4)
=5d+20
=5d
=d
Step 1
Step 2
Step 3
Find Frank's mistake.
Choose 1
Choose 1
(Choice A)
A
\green{\text{Step }1}Step 1start color #28ae7b, start text, S, t, e, p, space, end text, 1, end color #28ae7b
(Choice B)
B
\blue{\text{Step }2}Step 2start color #6495ed, start text, S, t, e, p, space, end text, 2, end color #6495ed
(Choice C)
C
\purple{\text{Step }3}Step 3start color #9d38bd, start text, S, t, e, p, space, end text, 3, end color #9d38bd
(Choice D)
D
Frank did not make a mistake.
Answers: 3
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