Question

Rozwiąż układ równań
4(2x+3)-2(4y-1)=30
(5x+1):3 -(y-3):4=3

Answer 1

4(2x + 3)-2(4y -1) = 30
5x + 1/3 - y-3/4 =3 /*3

8x+12-8y+2=30
15x+1-3y-9/4=9/*4

8x=16+8y
60x+4-12y-9=36

8x=16+8y/:8
60x+4-36-9=12y

x=2+y
12y=60(2+y)-41

x=2+y
12y=120+60y-41

x=2+y
-48y=79 /:(-48)

x=2+(-79/48)
y=-79/48

x=17/48
y=-79/48