Question

vă rog ajutați mă dau coroană ​

Answer 1

Răspuns:

Explicație pas cu pas:

1. 2x= 44 , x=44/2= 22

2. 4x= 45 , x=45/4= 11,25

3. 7x=2 , x=2/7

4.10x=8  , x= 8/10 = 4/5

Answer 2

$\it1)\ \ \ \dfrac{x}{4}=\dfrac{^{2)}11}{\ 2} \Rightarrow \dfrac{x}{4}=\dfrac{22}{4} \Rightarrow x=22\\ \\ \\ 2)\ \dfrac{5}{x}=\dfrac{4}{9} \Rightarrow\dfrac{x}{5}=\dfrac{9}{4} \Rightarrow \dfrac{x}{5}=2,25\Rightarrow x=5\cdot2,25 \Rightarrow x=11.25\\ \\ \\ 3)\ \ \dfrac{0,5}{7}=\dfrac{x}{4}\Big|_{\cdot4} \Rightarrow \dfrac{2}{7}=x \Rightarrow x=\dfrac{2}{7}$