Question

Solve the following system of equations by substitution method.



2x – y = 2 and x + 3y = 15

WRONG ANSWERS WILL BE REPORTED..!!​

Answer 1

Answer:

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GIVEN

2x – y = 2 .....(i)

x + 3y = 15. ......(ii)

To find

solve the equation by substitution method.

Solution

2x – y = 2 .....(i)

2x – y = 2 .....(i)x + 3y = 15. ......(ii)

from equation (i) value of y

y= 2x -2

put the value of y the (ii) equation

x + 3 x (2x-2) = 15

x+ 6x -6 = 15

7x -6 = 15

7x = 21

x= 21/ 7

x= 3

put the value of x in any of the given equation

3 + 3y = 15

3y = 15-3

3y= 12

y= 12/ 3

y= 4