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4x+12+22=46 x=3 4•3+12+22=46. X=3
A ostatnie zaraz w komentarzu zrb bo musze pomyslec
5x - 20 - 3 = 22
5x= 45
x = 9
2)
4x + 12 + 22= 46
4x= 12
x= 3
3)
5x-2= 33
5x= 35
x= 7