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Rezolvati ecuatia:
x+x×1.8+x÷5=180


Răspuns :

x + 18x/10 + x/5 = 180
10x + 18x + 2x = 1800
30x = 1800
x = 1800 : 30
x = 60
x+1.8*x+x/5=180
(5x+9x+x)/5=180
15x=900
x=60