Question

A+b=33 si a+c=11 calculați 5×a+3×b+2×c

Answer 1

Explicație pas cu pas:

a + b = 33

a + c = 11

5 × a + 3 × b + 2 × c =

3 × a + 3 × b + 2 × a + 2 × c =

3 × (a + b) + 2 × (a + c) =

3 × 33 + 2 × 11 =

99 + 22 =

121

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