2 answers:
I belive that the answer is C
Answer:
Option C : 7 +(-6) + (2+5)x
Step-by-step explanation:
Given :7 + 2(x – 3) + 5x
To Find :Which of the steps has an incorrect justification?
Solution :




So, Option C has an incorrect justification: 7 +(-6) + (2+5)x
Like terms can be added easily there is no need to apply distributive property .
Hence Option C has an incorrect justification
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Answer:
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Step-by-step explanation:
substitute 4 for x
28(4) - 9 (2(4)+ 6)
multiply
112-9(8+6)
add numbers
112-9(14)
multiply
112-126
subtract
-14
Answer:
9
Step-by-step explanation:


9
Answer:
1
Step-by-step explanation:
5/5=1
3 1/2 - (2/3)(3 1/2) =
<span>7/2 - (2/3)(7/2) = </span>
<span>7/2 - 7/3 = </span>
<span>21/6 - 14/6 = </span>
<span>7/6 or 1 1/6 yds</span>
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