Question

2×+3y=19
×+7y=26 método de sustitución

Answer 1

x= 26-7y

2*(26-7y) + 3y =19
52 -14y + 3y = 19
-11y = -33
y= 3


Si y= 3

2x + 3y= 19
2x +9 =19
2x=10
X= 5



X=5
y=3