solve the following set of equations by using substitution or elimination 2x+y=1 2x+3y=-41

Using elimination method:

- Multiply the first equation by -1 and add it to the second equation to eliminate x:
-2x - y = -1
2x + 3y = -41
____________
2y = -42
- Solve for y:
y = -21
- Substitute y=-21 into one of the equations and solve for x:
2x + (-21) = 1
2x = 22
x = 11
- The solution is (x,y) = (11,-21)