Question

5x+2y=7 x+6y=7
eliminate ​

Answer 1

ANSWER:

• Value of x is 1
• Value of y is 1

GIVEN:

• 5x+2y = 7
• x+6y = 7

TO FIND:

• Value of'x'and'y'.

SOLUTION:

=> 5x+2y = 7. ...(i)

=> x+6y = 7

Muntiplying both sides by 5 we get;

=> 5(x+6y) = 7*5

=> 5x+30y = 35. ....(ii)

Subtracting (i) from (ii) we get;

=> 5x+30y-5x-2y = 35-7

=> 28y = 28

=> y = 1

Putting y = 1 in eq(i) we get;

=> 5x+2(1) = 7

=> 5x = 7-2

=> 5x = 5

=> x = 1

• Value of x is 1
• Value of y is 1

Answer 2

Answer:

x=1, y=1

Step-by-step explanation:

5x+2y=7 => eq.1, x+6y=7 => eq.2

multiply 3 in eq.1:

15x+6y=21

Subtract both the equations:

   15x+6y=21

-      x+6y=  7

   14x     = 14

=> x=1

Substitute x in eq.2:

x+6y=7

(1)+6y=6

6y=6

=> y=1

∴x=1, y=1