Question

vă rog ajutorrrr
$\frac{23}{x + 5} = \frac{115}{37.5}$
$\frac{4x - 5}{0.5} = \frac{36}{4.5}$

Answer 1

Am atasat rezolvarea direct cu virgula

Answer 2

$\frac{23}{x + 5} = \frac{115}{37.5}$

$x + 5 = \frac{37.5 \times 23 }{115}$

$x + 5 = \frac{862.5}{115}$

x+5= 7,5
x=7,5-5
x=2,5

$\frac{4x - 5}{0.5} = \frac{36}{4.5}$

$4x - 5 = \frac{36 \times 0.5}{4.5}$

$4x - 5 = \frac{18}{4.5}$

4x-5= 4
4x= 4+5
4x= 9

$x = \frac{9}{4}$
x= 2.25

Sper că te-am ajutat!