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Ella44
a fost răspuns

Rezolvati exercitiile:
4y+10=2x-20
4-3y=-3x+14


5y+1=9-2x
-y=3x+1

3y-4=3x+8
3x-1,5y=6

Răspuns :

Adriana97
1.4y-2x=-30/•3
-3y+3x=10/•2
12y-6x=-90
-6y+6x=20
6y=-70
y=-35/2
-70-2x=-30
-2x=40
x=-20
2.5(-3x-1)+1=9-2x
-15x-5+1+2x=9
-13x=9+4
x=-1
y=-2

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