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a) 0= -3x+1
3x=1 /3
x=¹/₃
b) coś źle przepisałeś/łaś jeżeli ¹/₃ x to będzie tak:
0=¹/₃x+ 2
-¹/₃x= 2 /(-¹/₃)
x= -6
c) 0=-5x-4
5x=-4 /5
x= -⁴/₅
d) 0=¹/₂x - ¹/₂
-¹/₂x = -¹/₂ /(-¹/₂)
x=1
e) 0= -3¹/₂x +4
0= -⁷/₂x +4
⁷/₂x=4 / ⁷/₂
x=⁸/₇ = 1¹/₂