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daca a+b=33 si a+c=33 calculati 5•a+3•b+2•c=? Repede va rog dau coroana :/

Răspuns :

a+b=33

a+c=11

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5·a+3·b+2·c=?

3·a+2·a+3·a+2·a

3·(a+b)+2·(a+c)

3·33+2·11

99+22=121