3 years ago

If 3a − c = 5b and 3a + 3b − c = 40, what is the value of b?

SAT

1 answer:

Ket [755]3 years ago

6 0

Answer:

b = 5

Explanation:

add both of the equations together

3a - c = 5b

3a + 3b - c = 40

= 3b = 40 - 5b

then make it equal to 40 meaning

8b = 40

b = 5

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