Question

solve the problem by elimination method 6x +7y-11 =0, 5x+2y =13​

Answer 1

Answer:

x=3 ; y=-1

Step-by-step explanation:

6x+7y-11=0 (i)

5x+2y-13=0 (ii)

multiplying (i) by 2 and (ii) by 7

We got

12x+14y-22=0 (a)

35x+14y-91=0 (b)

subtracting (a) from (b) to eliminate y

35x+14y-91-12x-14y+22=0

or 23x-69=0

or 23x=69

or x=3

putting x=3 in (i)

6(3)+7y-11=0

or 7y+18-11=0

or 7y=-7

or y=-1