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2x+5=4x
2x-4x=-5
-2x=-5
x=-5:-2
x=2,5
to liczba 2,5
2x+5=4x /-2x
5=2x
x=2,5
2x + 5 = 4x - równanie
rozwiązanie
2x + 5 = 4x /-2x
5=2x /2
x=2,5
;)