3 years ago

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

1 answer:

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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