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Dmitriy789 [7]
3 years ago
13

Sam can not read part of this homework problem. -7y +5(3 + ___y) Sam knows the expression simplifies to 3y + 15. What number bel

ongs on the blank line in the homework problem? Question 5 options: A. 10 B. -4 C. 4 D. 2
Mathematics
1 answer:
choli [55]3 years ago
7 0
Write and solve an equation, as follows:

-7y + 5(3+ny) = 3y + 15.  We are to find the value of 'n.'

-7y + 15 + 5ny = 3y + 15.

Subtracting 15 from both sides, we get    -7y + 5ny = 3y 

Grouping like terms, we get   5ny = 3y + 7y = 10y

Dividing both sides by 5y, we get n = 2   (answer)
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Answer: 8 students have brown eyes

Step-by-step explanation:

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5 x 8 = 40%. 8 students have brown eyes.

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3 years ago
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Answer:

one solution (-2 ; 5)

Step-by-step explanation:

hello :   2x + 3y= 11 ...(*)

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put this value into (*) :  2(-5y+23)+3y=11

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y=5

but x= -5y+23

so :  x= -5(5)+23 =-2

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