Question

Bantu jawab ya :-)
2x-3y=12
-3x+y=-11 penyelesaian sistem persamaan lineardua variabel metode substitusi.

Answer 1

2x-3y=12
-3x+y=-11 ----> y=-11+3x

2x-3y=12
2x-3(-11+3x)=12
2x+33-9x=12
-7x=-21
x=3

2x-3y=12
2.3-3y=12
6-3y=12
-3y=6
y=-2