Solve the following systems of equations by elimination:
2x – y = -8
5x + 2y = -20

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Math

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Solve the following systems of equations by elimination:
2x – y = -8
5x + 2y = -20

Sagot :

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Mlcparra16viz Mlcparra16viz · Answer 1

Mlcparra16viz Mlcparra16viz

2x - y = -8 ... [1]
5x + 2y = -20 ... [2]

2[1] + [2]
4x - 2y = -16
5x + 2y = -20
9x = -36
x = -4

2x - y = -8
2(-4) - y = -8
-8 - y = -8
-y = 0
y = 0

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