Question

2. Aflați numărul necunoscut: a + 25 + 25 : 5 = 108 400-b x4 – 60 = 300 (c x 15 + 125): 50 = 10​

Answer 1

Răspuns:

a+25+25:5=108 <=> a+25+5=108 <=> a=108-25-5 <=> a=78

400-b×4-60=300 <=> -4b=300-400+60 <=> -4b=-40 <=> b=-40:(-4) <=> b=10

(15c+125):50=10 <=> 15c+125=10×50 <=> 15c+125=500 <=> 15c=500-125 <=> 15c=375 <=> c=375:15 <=> c=25

sper că te-am ajutat :))