Question

ecuaciones de segundo grado
2x+y=14
3x-2y=7

Answer 1

2x+y=14
3x-2y=7

X=14-Y/2 
X=7+2Y/3

14-Y/2 =7+2Y/3
42-3Y=14+4Y
42-14=4Y+3Y
28=7Y
28/7=Y
4=Y

3X-2(4)=7
3X-8=7
3X=7+8
3X=15
X=15/3
X=5