6-2x-y=x+2y-3 -4x+3y+1=x+y+4 i to wszystko w klamrę. POMOCYY!! POTRZEBNE NA JUŻ!!!
6-2X-Y=X+2Y-3
-4X+3Y+1=X+Y+4
-2X-Y-X-2Y=-6-3
-4X+3Y-X-Y=4-1
-3X-3Y=-9 /(-3)
-5X+2Y=3
X=3-Y
2Y=5*(3-Y)+3
2Y=15-5Y+3
2Y+5Y=18
7Y=18 / 7
Y=18/7
Y=2,57
X=3-2,57
X=0,43
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6-2X-Y=X+2Y-3
-4X+3Y+1=X+Y+4
-2X-Y-X-2Y=-6-3
-4X+3Y-X-Y=4-1
-3X-3Y=-9 /(-3)
-5X+2Y=3
X=3-Y
2Y=5*(3-Y)+3
2Y=15-5Y+3
2Y+5Y=18
7Y=18 / 7
Y=18/7
Y=2,57
X=3-2,57
X=0,43