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(589+145):15+(287-269):3

Răspuns :

[tex] \frac{589+145}{15} + \frac{287-269}{3} =\frac{734}{15}+\frac{18}{3}= \frac{734+18*5}{15} = \frac{824}{15} =54,93[/tex]
589+145 = 734
287-269=18
734 :15 + 18 :3 = 48,9(3) + 6 = 54 ,9(3)