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DUMIMASTER2016
a fost răspuns

rezolvati in multimea Q ecuatiile:5-2x=-2,6;2,3x+1,2x=7;(4x-1):3=o trime;-3x(2-15x)= -6

Răspuns :

5-2x=2,6
2x=5-2,6
2x=2,4
x=2,4:2
x=1,2



2,3x+1,2x=7
3,5x=7
x=7:3,5
x=2

(4x-1):3=o treime
4x-1=o treime ori 3
4x-1=1
4x=2
x= unu supra doi

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