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Masja [62]
3 years ago
6

1.

Mathematics
2 answers:
Monica [59]3 years ago
5 0
<span>Question 1:

–6 + x = –3

x = -3 + 6

x = 3

Hence, the answer is C.

Question 2:

</span><span>–2a + 2a + 7 = 8 

7 </span>≠ 8

Hence, the answer is C.

Question 3:

<span>2(2y – 16) = 0

4y - 32 = 0

4y = 0 + 32

4y = 32

y = </span>\frac{32}{4}

y = 8

Hence, the answer is C.

Question 4:

<span>5p – 4p – 8 = –2 + 3 

p - 8 = 1

p = 1 + 8

p = 8

Hence, the answer is A.

Question 5:

</span><span>4n – 2n + 4 = –1 + 17

2n + 4 = 16

2n = 16 - 4

2n = 12

n = </span>\frac{12}{2}

n = 6

Hence, the answer is A.

Question 6:

<span>2(4z – 3 – 1) = 166 – 46

8z - 6 - 2 = 120

8z = 12 + 8

8z = 20

z = </span>\frac{20}{8} =  \frac{10}{4} =  \frac{5}{2}

z = 2.5

Hence, I think the question is wrong; it is missing a variable.

Question 7:

<span>–x = 3 – 4x + 6

-x + 4x = 3 + 6

3x = 9

x = </span>\frac{9}{3}

x = 3

Hence, the answer is C.

<span>Question 8:

4n + 6 = 4 + 2 + 4n 

4n - 4n + 6 = 6

6 = 6

Hence, the answer is C.

Question 9:

</span><span>6y + 4 = 8 + 2y + 2y

6y - 4y = 8 - 4

2y = 4

y = </span>\frac{4}{2}

y = 2

Hence, the answer is B.

Question 10:

<span>3(2x – 4) = 8 + 2x + 6

6x - 12 = 14 + 2x

6x - 2x = 14 + 12

4x = 26

x = </span>\frac{26}{4} =  \frac{13}{2}

x = 6.5

Hence, the answer is A.

Question 11:

<span>z – z + 1 = z + 1
</span>
1 = z + 1

z = 1 - 1

z = 0

Hence, the answer is B.

Question 12:

<span>3.6m – 2.7 = –1.8m
</span>
3.6m + 1.8m = 2.7

5.4m = 2.7

m = \frac{2.7}{5.4} =  \frac{1}{2}

m = 0.5

Hence, the answer is B.
Olin [163]3 years ago
4 0

  Q1  Y=3 C

  Q2 7=8 C

  Q3 Y=8 C

  Q4 P=8 A

  Q5 N=6 A

  Q6 Z=2.5 C

  Q8 6=6 C

  Q9 Y=2 B

 Q10  X=6.5 A

 Q11 Z=0 B

 Q12 M=0.5 B

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