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3x+2y=26
2x-2y+3x+2y=-1+26
5x=25/:5
x=5
3x+2y=26
3*5+2y=26
15+2y=26
2y=26-15
2y=11/:2
y=5,5
liczę na naj ;D
+ 3x+2y=26
__________________
5x=25 |:5
x=5
3*5+2y=26
15+2y=26
2y=26-15
2y=11|:2
y= 11/2
x=5
y=11/2