Step-by-step explanation:
multiply the first equation by 5 and the second by 2
5(3x+2y=-7)
2(2x-5y=8)
15x+10y=-35
4x-10y=16
add them
19x=-19
divide both sides by 19
x=-1
bring the value of x in either equation 1 or 2
in 1
3(-1)+2y=-7
-3+2y=-7
2y=-7+3
2y=-4
divide both sides by 2
y=-2
