Question

Daca 3+3=2xb=c:5=10 atunci suma nr a,b,c,=......, a)68 b)62 ,c)26 , d)77

Answer 1

3+b=2xb=c:5=10
c : 5 = 10
c = 10×5
c = 50

2×b = 50:5
2×b = 10
b = 10:2
b = 5

3 + a = 2×5
3 + a = 10
a = 10-3
a = 7

a+b+c = 7 + 5 + 50 = 62 (suma)

varianta b) este corecta