Question

x - y = 4; x/4 + y/3 = 8​

Answer 1

Answer:

x=1, y=-4

Step-by-step explanation:

4x + y/3 = 8/3

multiply each term with 3 , we get

12x + y = 8

=> y = 8 - 12x ---( 1 )

x/2 + 3y/4 = -5/2----( 2 )

Substitute y = 8 - 12x in equation ( 2 ),

x/2 + ( 3/4 )[ 8 - 12x ] = -5/2

=> x/2 + 3[ 8/4 - 12x/4 ] = -5/2

=> x/2 + 3( 2 - 3x ) = -5/2

multiply each term with 2 , we get

=> x + 6( 2 - 3x ) = -5

=> x + 12 - 18x = -5

=> -17x = -5 - 12

=> -17x = -17

=> x = ( -17 )/( -17 )

x = 1

put x = 1 , in equation ( 1 ) , we get

y = 8 - 12 × 1

y = 8 - 12

y = -4

Therefore ,

x = 1 , y = -4

hope it's helpful to you!

Answer 2

Answer:

x -y = 4 ----- 1

x/4 + y/3 = 8 ------ 2

taking equation 1

x - y = 4

x = y + 4 ------- 3

from,eq 2 & 3 substitute the value

x/4 + y/3 = 8

(y + 4)/4 +y/3 = 8. [x=y+4]

(12 + 3y + 4y)/12 = 8

12+7y=8×12

12+7y=96

7y=96-12

7y=84

y=84/7

y=12 ------- 4

substitute the value of equation of 3 & 4

x=y+4

x=12+4

x=16.

therefore x=16 & y=12.

Step-by-step explanation:

equation(eq) 1 &2 are given. take eq 2 and substitute the value in ep 3.and slove and we get the y value is 12.