Question

dau coroana, va rog!​

Answer 1

Răspuns:

Explicație pas cu pas:

$\large \bf c)~~\dfrac{11}{12}+ \dfrac{5}{\boxed{}}=\dfrac{31}{12}$

$\large \bf \dfrac{5}{\boxed{}}=\dfrac{31}{12} - \dfrac{11}{12}$

$\large \bf \dfrac{5}{\boxed{}}=\dfrac{20}{12}\implies \large \bf 5\cdot 12 = \boxed{}\cdot 20$

$\large \bf 60 = \boxed{}\cdot 20 ~~~\bigg|:20$

$\color{red}\Large \bf \boxed{\bf \boxed{}=3}$

$\it~~$

$\large \bf d)~~\dfrac{\boxed{}}{3}+ \dfrac{13}{18}=\dfrac{19}{18}$

$\large \bf ~\dfrac{\boxed{}}{3} =\dfrac{19}{18}-\dfrac{13}{18}$

$\large \bf ~\dfrac{\boxed{}}{3} =\dfrac{6}{18}$

$\large \bf \boxed{} \cdot 18 = 3\cdot 6$

$\large \bf \boxed{} \cdot 18 = 18~~~~\bigg|:18$

$\color{red}\Large \bf \boxed{\bf \boxed{}=1}$

==pav38==