Question

Solve the following pair of linear equation by
substitution method a) x+3y=9. b)2x-y=4​

Answer 1

Answer:

a) x = 0, y = 3

b) x = 8 , y = 4

Step-by-step explanation:

a) x + 3y = 9

x = 9 - 3y

putting  the obtained value,

( 9 - 3y ) + 3y = 9

9 = 9

3y = 9

y = 3

now x = 9 - 3y

9 - 9 = 0

x = 0

b) 2x - y = 4

2x = 4 + y

putting the value,

( 4+ y ) - y = 4

4 = 4

y = 4

now x = 4 + y

4 + 4 = 8

x = 8

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