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2x + y = 1
-3x + 3y=9 /:3
2x+y=1
-x + y=3
2x+y=1
y=3+x
2x+3+x=1
y=3+x
3x=-2
y=3+x
x=-2/3
y=3+x
x=-2/3
y=3-2/3
x=-2/3
y=2 1/3
c)
8x + 2y = -2 /:2
6x + y =0
4x+y=-1
6x+y=0
4x-1=y
6x+y=0
4x-1=y
6x+4x-1=0
4x-1=y
10x=1
4x-1=y
x=0,1
y=0,4-1
x=0,1
y=-0,6
x=0,1
Zadanie zrobione metodą podstawiania mam nadzieję że pomogłem :)