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AURORKA [14]
3 years ago
15

2a + b = 3 and a - 3b = 5

Mathematics
1 answer:
vfiekz [6]3 years ago
6 0

Answer:

a= 2 b=-1

Step-by-step explanation:

a-3b=5

or, a= 5+3b_(i)

substituting value of a in 2a+b=3,

2×(5+3b)+b=3

or, 10+6b+b=3

or, 7b=3-10

or, 7b=-7

b= -1

substituting value of b in(i),

a=5+3b

=5+3×(-1)

=5-3

=2

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A city bus collected $780 in fares on one day.
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Answer:

450 people paid the discounted fare and 750 people paid the regular fare.

Step-by-step explanation:

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3 years ago
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Answer:

12

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