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kow [346]
2 years ago
6

Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2

Mathematics
1 answer:
nasty-shy [4]2 years ago
8 0
2a + 3b = -1
3a + 5b = -2

3(2a + 3b = -1)    -->    6a + 9b = -3
2(3a + 5b = -2)    -->    6a + 10b = -4
                                 -  ___________
                                               b = -1

2a + 3(-1) = -1
2a - 3 = -1
2a = 2
a = 1

2(1) + 3(-1) = -1    -->    2 - 3 = -1
3(1) + 5(-1) = -2    -->    3 - 5 = 2

Answer:
a = 1
b = -1

Hope this helps.
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Read 2 more answers
What are the x and y-intercepts of the line?
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B

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To find the x-intercept, plug in y=0 into the original equation. (You want to find what x is when y=0)

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