Question

Sistema de ecuaciones lineales?
ayudaaa

METODO SUSTITUCION
3X + 5Y= 15
2X - 3Y = -9

Answer 1

3x+5y=15
2x-3y=-9

X=-9+3y/2
X=-9/2+3/2y

3(-9/2+3/2y)+5(-9/2+3/2y)=15
-27/2+9/2y-45/2+15/2y=15
9/2y+15/2y=15+27/2+45/2
12y=15+36
12y=51
Y=51/12
Y=17/4

Si no me equivoco