i dont know if i can explain it right, but its kinda just like matching numbers to an equation with other numbers
google videos can explain it better and show
hope this help :)
4x+3y=8
x-2y=13
4x+3y=8
4x-4y=13
(4x-4x) - (3y+4y)= 5
7y=5
y=5/7
Plug this back to one of the original equations!
Good luck!
If you multiply the top equation by -2 you get:
-4x -14y = 14 => -4x = 14+14y
now you can plug in the -4x into the second equation:
14+14y - 3y = -19 => 11y = -33 => y=-3
Fill in y=-3 in either equation to find x:
2x - 21 = -7 => 2x = 14 => x=7
So your ordered pair is (7,-3)
I think it’s a yardstick.
Hopefully this helps...