Răspunsuri

2014-09-08T14:47:49+03:00
A+b=21 a=5b 5b+b=21;6b=21;b=21/6;b=3,5 deci a=3,5*5 adica a = 17.5
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2014-09-08T14:48:14+03:00
A+b= 21
a=5b⇒ 5b+b=21⇒6b=21⇒ b=3,5
a=5·3,5=17,5
1 5 1