Question

3(x + 2) - 3(y -4) = 12
2(x - 3) + 4(y - 3) = 8
halla 5x + y

Answer 1

3x+6-3y+12=12
3x-3y=12-6-12
3x-3y=6-12
3x-3y=-6
X-y=-2

2x-6+4y-12=8
2x+4y=8+12+6
2x+4y=20+6
2x+4y=26
X+2y=13

X-y=-2
X+2y=13

X=-2+y
-2+y+2y=13
Y+2y=13+2
3y=15
Y=15/3
Y=5

X=-2+y
X=-2+5
X=3

Hallar 5x+y:

5•5+3
25+3
28