Solve the system of equations by addition. −x+2y =−1 , 5x−10y =6

Question

Solve the system of equations by addition. −x+2y =−1 , 5x−10y =6

Answer 1

-x +2y = -1

5x-10y = 6

multiply the 1st equation by -5

to get

5x-10y = 5

there is no solution. If you graphed the two lines, they are parallel lines that never intersect.

the two equations are contradictory

subtract one from the other and you get: 0=1 there are no values of x or y that will make 0=1