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Ande10
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help plzz!!!! a+b=9 si c+3, calculati ac+bc,
a=16, b+c=25, calculati ab+ac;2a+3b+3c
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Răspuns :

Grigoremihaela
a+b=9
c=3
ac+bc=c(a+b)=3x9=27

a=16
b+c=25
 ab+ac=a(b+c)=16x25=400
2a+3b+3c=2x16+3(b+c)=32+3x25=32+75=107

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