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15+2×15+3×[100-(3×15+2×15)-150:15]=

Răspuns :

Needhelp112

15+2×15+3×[100-(3×15+2×15)-150:15]=

= 15+30+3x[(100-(45+30)-10] =

= 45+3x(100-75-10) =

= 45+3x15 =

= 45 + 45 =

= 90