Question

solve 3x+y=4 ,when 2 (y-5) =-5x

Answer 1

Answer:

Step-by-step explanation:

3x+y=4 and then 2y _10=-5x

Then shift -5x to left side and -10 to right side 2y+5x=10 now mutiply 3x+y=4 with 2 and we get 6x+2y=8 and then subtract from 2y+5x=10 so the y terms mean 2y are cancel by each other and we get the value of x which is -×=2 then multiply both side by - we get x=-2 and then put in 3x+y=4 we get 3 (-2)+y=4or -6+y=4 adding 6 both side so y=10