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## Answers

*77x-8y-11=0 ⇒77x-8y=11....eqn.(1).*

*8x-7y-7=0 ⇒ 8x-7y=7.....eqn.(2)*

*LCM of 8 and 7 ( numerical coefficients of y)=56.*

*So we make Numeric Coefficient of y equal to 56 in both case.*

*77x-8y=11 ⇒ 539x - 56y=77.....(1) (multiplying all terms by 7) and*

*8x-7y=2 ⇒64x-56y=14.......(2)*

*subtracting eqn.(2) from (1) we get:*

*539x-56y-(64x-56y)=77-14.*

*or,539x-56y-64x+56y=59*

*or,475x=59.*

*or,x=59/475.*

*Substituting x as 59/475 in 77x-8y=11 we get*

*59/475*77-8y=11*

*or,8y=9.56(approx)-11*

*or,y=-0.18 (approx).*

*Ans:x=59/475 , y=-0.18.*8x - 7y =7

__* 8__

539x - 56y = 77

64x - 56y = 56

475x = 21

x = 21/475

now substitute this in any of this equation

8x - 7y = 7 or

77x - 8y =11