Question

Solve by using elimination and substitution method
x+2y=1
2x-y=2

Answer 1

Using elimination:

x + 2y = 1---> x + 2y = 1

2x - y = 2--->4x - 2y = 4

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5x = 5

x = 1, y = 0

Using substitution:

x + 2y = 1--->x = 1 - 2y

2(1 - 2y) - y = 2

2 - 4y - y = 2

2 - 5y = 2

y = 0, x = 1