Question

problema 5...Mulțumesc mult !

Answer 1

Răspuns:

Explicație pas cu pas:

a) 5400=x·80+40  ⇒    5400-40=80x  ⇒   5360=80x   ⇒x=67

b)n×60:30=100  ⇒     n×2=100      ⇒n=50

c) 20 200:20=1010

20 200:2020=100  

Answer 2

Răspuns:

5. a) 5400:x=80 rest 40 => 80x+40=5400 =>

80x=5400-40 => 80x=5360 => x=5360÷80

x=67

b) a×60÷30=100 => a×60=100×30 => a×60=300

a=300÷60=> a=50

c) 20200÷20=1010

20200÷x=101×2=>20200÷x=202

x=20200÷202=> x=100