Răspunsuri

2014-11-19T14:26:49+02:00
1) 6x+3=216x=21-3
6x=18
x=18:6
x=3

2)4(x+3)+1=25
4x+12+1=25
4x+13=25
4x=25-13
4x=12
x=12:4
x=3

3)5x < 62

x<62:5
x<12,4
x∈{0,1,2,3...,11}
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