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3,5X+0,5=1,5X+25 si 0,3X:4,5=27

Răspuns :

3.5x+0.5=1.5x +25
2x+0.5=25
2x=24.5
x=24.5/2
x=12.25
0.3x/4.5=27
0.3x=27*4.5
0.3x=121.5
x=121.5/0.3=>x=405
0,3x=27x4,5  0,3x=121.5    x=121.5 : 0.3   x=405