1.
(x+1)-(y-2)=x+(x+y)*(x+y)+y-1*x-y/4-1=x+y/2
x+1-y+2=x+x-y*x+y+y-1*x-y/4-1=x+y/2
x-x-x+x+x-x=y+y+y+y-y+y=1+2/4+1/2
0x=4y=2
4y=2/4
y=2
2.
(x-44/2-2x-y/5)=4*5x-2y=5
x-44/2-2x-y/5=4*5x-2y=5
x-44/2-2x-y/5=20x-2y=5
x-2x+20x=-y-2y=44/2/5+5
19x=-3y=9,4/*10
190x=-30y=94
190x+(-30y)=94
160xy=94/160
xy=1 cała i 70 160 zapisz to w postaci ułamka