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ofer 50 de puncte pt ex 3

Ofer 50 De Puncte Pt Ex 3 class=

Răspuns :

  3*b+c=74
a=44
10*a+6*b+2*c=?
a*10=440
6*b+2*c=( 3*b+c )*2=74*2=148
10*a+6*b+2*c=440+148=588
a=44
3•b+c=74 => 2•3b+2•c=2•74
6•b+2•c=148
10•a+6•b+2•c = 10•44+148
= 440+148
= 588