Question

what is the solution to the system?
2x+5y=-4
4x-5y=22

the options are (3,-2) (13/3, -25/3), (-2,3) (3, 2/5)

Answer 1

2x + 5y = -4
4x - 5y = 22
---------------add
6x = 18
x = 3

now sub 3 in for x in either one of the equations above
2x + 5y = -4
2(3) + 5y = -4
6 + 5y = -4
5y = -4 - 6
5y = -10
y = -2

answer : (3,-2)

any questions ?

Answer 2

no, thank you so much! im gonna use this to teach myself on another problem that i have to solve the same way. thank you!