3 years ago

What is the value of a in the equation 3a + b = 54, when b = 9?

Mathematics

1 answer:

lions [1.4K]3 years ago

6 0

3a + b = 54
Substitute b for 9
3a + 9 = 54
Subtract 9 to both sides
3a = 45
Divide 3 to both sides
a = 15

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