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Andrews [41]
4 years ago
14

If (a, -5) is a solution to the equation 3a = -2B - 7, what is a?

Mathematics
1 answer:
Andrew [12]4 years ago
3 0
I think what you need to do is make B = -5
3a = -2(-5) - 7
3a = 10 - 7
3a = 3
a = 1
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cupoosta [38]

Answer:

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6 0
3 years ago
Determine the value of a + b in the system of equations below. <br><br> 5a + 4b = 22<br> 7a-b= 11
dexar [7]

Answer:

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Step-by-step explanation:

Here, we want go get the value of a and b

from the second equation, we can get an expression for b

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7a - b = 11

Thus,

b = 7a - 11

Now, from here, we can substitute the value of b into the first equation

We have this as;

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b = 7a - 11

substituting the value of a from above;

b = 7(2) - 11

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6 0
3 years ago
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Answer:

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Step-by-step explanation:

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Answer:

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