Question

suma a4 numere este egala cu rezultatul calculului 8*9+10.daca din fiecare nr. se scade acelasi numar,se obtin nr 10,20,15,5

Answer 1

a+b+c+d=8*9+10
a+b+c+d=82
10+20+15+5=50
82-50=32
32:4=8
a=10+8=18
b=20+8=28
c=15+8=23
d=5+8=13

Answer 2

8×9+10 = 72+10 = 82
a+b+c+d = 82
a-X = 10 => a = X+10
b-X = 20 =>b = X+20
c-X = 15 =>c = X+15
d-X = 5 => d = X+5
4×X +50 = 82
4×X = 82-50
4×X = 32
X = 32:4
X = 8

a = 8+10 = 18
b = 8+20 = 28
c = 8+15 = 23
d = 8+5 = 13

Verificare:
18+28+23+13 = 82

a |____|+10
b |____|+20
c |____|+15
d |____|+5

avem 4 segmente egale +10+20+15+5 = 82
82 - 50 = 32
32:4 = 8
a = 18
b = 28
c = 23
d = 13