Question

1)Aflati pe x din (2x+3x):5=7

2)Rezolvati in N ecuatiile 5.x + 3.x + x = 64
x+x+x=6

3)Rezolvati ecuatiile urmatoare in N
(x+3):4=25 ; 7(5x-6)=98 ; (340 + x).25=100

Answer 1

1) 5x:5=7
x=7
2)3x=6
x=2
3)x+3=100
x=97

35x-42=98
35x=140
x=4

340+x=4
x=-336