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HACTEHA [7]
3 years ago
14

3p + 7q = 55 7p + 7q = 91 What is p and q

Mathematics
2 answers:
kkurt [141]3 years ago
7 0

Step-by-step explanation:

3p + 7q = 55

7p + 7q = 91

(-)

-4p=-36

p=9

q=4

valentinak56 [21]3 years ago
7 0

Answer:

p = 9 and q = 4

Step-by-step explanation:

3p + 7q = 55 -- (1)

7p + 7q = 91 -- (2)

(2) - (1) : 4p = 36

               p = 9 -- (3)

Substituting (3) into (1),

27 + 7q = 55

7q = 28

q = 4 -- (4)

Therefore, p = 9 and q = 4

If this helps you, please mark brainliest!

Have a nice day!

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