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Bess [88]
3 years ago
10

What is the value of a in the equation , when ? 3 15 21 39

Mathematics
2 answers:
AlladinOne [14]3 years ago
8 0

Answer:

15

Step-by-step explanation:

5 times 15 is 75

10 times 3 is 30

75 -30 = 45

IRINA_888 [86]3 years ago
6 0

Answer:

The value of a is 15

Step-by-step explanation:

Given the equation

5a-10b=45

we have to find the value of a when b is 3

5a-10b=45

Substitute b=3, we get

5a-10(3)=45

5a-30=45

5a=45+30=75

a=\frac{75}{5}=15

Hence, the value of a is 15

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