Solve the system by substitution: 2x-y=5 -2x+y=7
from the first equation we get 2x = y+5 substitute that in the second equation to get -(y+5)+y =7 solve for y and plug it back in one of the original equations to find the value of x
Can you help with please??
there is no solution to this.
you are welcome
you get -5 = 7 which is silly, hence this system of equations doesnt have a solution. notice that the slopes of the two lines are the same. this means they are parallel. this means they have no point of intersection and hence no solution