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Elenna [48]
3 years ago
8

The difference of two numbers is 8. When twice the first number is added to three times the second number, the result is 51. Wha

t are the two numbers?
A.
12 and 4
B.
15 and 7
C.
20 and 12
D.
23 and 15
Mathematics
2 answers:
iogann1982 [59]3 years ago
8 0
A-b=8
2a+3b=51

2a-2b=16
2a+3b=51


Subtract both
-5b=-35

b is 7 and a is 15
matrenka [14]3 years ago
3 0

Answer:

B. 15 and 7

Step-by-step explanation:

Let x and y be the two numbers

x - y = 8

x = y + 8

2x + 3y = 51

2y + 16 + 3y = 51

5y = 35

y = 7

x = 15

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