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5v₁+4v₂=4 / *(-5)
7v₁+5v₂=6 / *4
-25v₁-20v₂=-20
28v₁+20v₂=24
3v₁=4 /:3
v₁=⁴/₃=1⅓
5v₁+4v₂=4
v₁=1⅓
5(⁴/₃)+4v₂=4
v₁=1⅓
²⁰/₃+4v₂=4 /:4
v₁=1⅓
v₂=1⅔
v₁=1⅓
f.
3x-0,2y=35
2,5x-5y=5 /:(-25)
3x-0,2y=35
0,1x+0,2y=0,2
3,1x=35,2 /:3,1
x=12
2,5x-5y=5
x=12
2,5(12)-5y=5
x=12
30-5y=5 /:(-5)
x=12
y=5
x=12