równania proste wymierne: a) x+1 x+2 ------- = --------- x+2 x-3 b) x-1 x-3 ------ = ------- x+5 x-1 d) x+3 x-1 ------- = ------ x+5 x-3 to sa kreski ułamkowe jbc błagam o pomoc!!

równania proste wymierne: a) x+1 x+2 ------- = --------- x+2 x-3 (x+1)*(x-3)=(x+2)*(x+2) x²+x-3x-3=x²+2x+2x+4 x²-x²-2x-4x=4+3 -6x=7 x=-7/6 b) x-1 x-3 ------ = ------- x+5 x-1 (x-1)*(x-1)=(x-3)*(x+5) x²-x-x+1=x²-3x+5x-15 x²-x²-2x-2x=-15-1 -4x=-16 x=4 d) x+3 x-1 ------- = ------ x+5 x-3 (x+3)*(x-3)=(x-1)*(x+5) x²-9=x²-x+5x-5 x²-x²-4x=-5+9 -4x=4 x=-1