3 years ago

If ax + y=23, 3x - y = 9, and x =8, what is the value of a ?

Mathematics

1 answer:

inna [77]3 years ago

6 0

Answer:

a = 1

Step-by-step explanation:

x = 8

3x - y = 9

3(8) - y = 9

24 - y = 9

-y = 9 - 24

-y = -15

y = 15

ax + y = 23

a(8) + 15 = 23

8a = 23 - 15

8a = 8

a = 8/8

a = 1

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