Question

(by Substitution Method)
ii) 3x - y = 12
X + 2y = 11​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Given

3X-Y=12..... eq 1 , X+2y=11....eq 2

By substitution method.....

3X-y=12

3x=12+y

x=y+12/3

x=y/3+4. eq i

substitute i in 2

y/3+4+2y=11

y+12+6y/3=11

7y+12=33

7y=33-12

7y=21

y=21/7

y=3..

Substitute 'y' in any equation.....

y in 1

3x-y=12

3x-3=12

3x=15

x=5..

Hope will help you...