👤


1. exercitiu
140-[(24:x+12x13):4+353]:3-6=3
2. exercitiu
{49.900-[38.000-72.040:(904-x)]x25}x8=3.200
Va multumesc!


Răspuns :

140-[(24:x+12x13):4+353]:3-6=3

140-[(24:x+12x13):4+353]:3=3+6

140-[(24:x+12x13):4+353]:3=9

[(24:x+12x13):4+353]:3=140-9

[(24:x+12x13):4+353]:3=131

(24:x+12x13):4+353=131x3

(24:x+12x13):4+353=393

(24:x+12x13):4=393-353

(24:x+12x13):4=40

(24:x+12x13)=40x4

24:x+12x13=160

24:x+156=160

24:x=160-156

24:x=4

x=24:4

x=6



{49.900-[38.000-72.040:(904-x)]x25}x8=3.200


{49.900-[38.000-72.040:(904-x)]x25}=3.200:8

49.900-[38.000-72.040:(904-x)]x25=400

[38.000-72.040:(904-x)]x25=49900-400

[38.000-72.040:(904-x)]x25=49500

38.000-72.040:(904-x)=49500:25

38.000-72.040:(904-x)=1980

72.040:(904-x)=38000-1980

72.040:(904-x)=36020

904-x=72040:36020

904-x=2

x=904-2

x=902