Question

a:4=b:5/a+b=27 Dau coroana​

Answer 1

Răspuns:

$\dfrac{a}{4} =\dfrac{b}{5} ,~~\dfrac{a}{b} =\dfrac{4}{5},~~~\dfrac{a+b}{b} =\dfrac{4+5}{5},~~~\dfrac{27}{b} =\dfrac{9}{5},~deci~~b=\dfrac{27*5}{9} =15$

Inlocuim in a+b=27, ⇒a+15=27, ⇒a=27-15=12

Deci a=12, b=15.

Explicație pas cu pas:

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