Question

Solve this please y=5x-8 and y=6x+3 by elimination

with solutions

Answer 1

Solutions 

$\left \{ {{y=5x-8} \atop {x=6x+3}} \right.$ 

Arrange equation  variables for elimination :

$\left \{ {{y-5x=-8} \atop {x-6x=3}} \right.$
   y -   6x = 3
-  y -  5x = -8
______________
-x =  11

For y :

y - 6 x = 3

y - 6 ( - 11 ) = 3

y + 66 = 3

y = 3 - 66

y = -63

x = - 11      y = -63

Answer 2

let it be       y=5x-8 - ( equation 1 )
let it be       y=6x+3 - ( equation 2 )

by elimination process  { equation 2 - equation 1 }

 y = 5x-8 (-) y=6x+3
( here in the above subtraction we can directly cancel the y because " {y+(-y)} = 0 "
⇒  5x = 8 (-) 6x = 3  
∴ -x = 11

To know the value of x
⇒ y - 6x = 3
( we know the value of x so we will substitute it in the above step )
⇒ y- 6(-11) = 3
⇒ y+66 = 3
⇒ y = 3-66
∴ y = -63

The value of " x = -11 " and " y = -63 "