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rosijanka [135]
3 years ago
7

Someone help will mark brainlist and its multiple choice

Mathematics
1 answer:
drek231 [11]3 years ago
5 0

Answer:

D and E

Step-by-step explanation:

plz mark me as brainliest

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8. 12x+3= 27

move 3 to the other side , sign changes from +3 to -3

12x+3-3=27-3

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x= 2

9. 6(y-10)=42

mutiply the bracket by 6

(6)(y)(6)(-10)= 6y-60

6y-60= 42

move -60 to the other side, sign changes from -60 to +60

6y-60+60=42+60

6y=102

divide by 6

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y=17

10. 9x-2=4x+13

move +4x to the other side

9x-4x-2= 4x-4x+13

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11. 4/3y+5/2y= 1

find the common denominator for both of the fractions which is 6.

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23/6y(6/23)= 1 (6/23)

Cross out 6 and 6 , divide by 6 and then becomes 1.

Cross out 23 and 23, divide by 23 and then becomes 1.

1*1*y=y

y= 6/23

5 0
3 years ago
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