5x+y=05x+2y=30

Question

its hard to solve this

Answer 1

separate the 2equations

5x+y= 30

5x+2y= 30

multiply first equation by -1

-5x-y=-30

5x+2y=30

Add the equations

0x +y=0

or. y=0

if y=0, 5x+0=30.   so 5x=30,   divide by 5,  therefore, x=6.   answer:  (6, 0)