Question

cum se calculeaza aceasta operatie una sub alta pas cu pas(dau coroana) va rog ​

Answer 1

$\it 0,15\cdot1,2+6,25:2,5=\dfrac{15}{100}\cdot\dfrac{12}{10}+\dfrac{625}{100}\cdot\dfrac{10}{25}=\dfrac{180}{1000}+\dfrac{250}{100}=\\ \\ \\ =\dfrac{18}{100}+\dfrac{250}{100}=\dfrac{268}{100}=2,68$

Answer 2

0,15 • 1,2 = 15/100 • 12/10 = 180/1000 = 0,18
6,25 : 2,5 = 625/100 : 25/10 = 625/100 • 10/25 = 25/10 = 2,5
0,18 + 2,5 = 2,68