Question

Solve the pair of linear equations x + 2y = 1 and 2x – y = 12 by substitution method.

Answer 1

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Step-by-step explanation:

Answer 2

Step-by-step explanation:

x=1 - 2y

2(1 - 2y)-y=12

2-4y-y=12

2-5y=12

-5y=12-2

y=10/-5

y=2/-1 ans

x+2y=1

putting value of y

x+2(2/-1)=1

x-4/1=1

x=1+4/1

x=5/1

so ,

x=5/1

y=2/-1