Question

Rezolvati in multimea numerelor reale ecuatiile::
a) 7x/6 -1 1/2=x-3/3
b)3x+1/5 -2 1/2=4x-11/10
c) 6x/5 -3 1/3= 7x+16/15

Answer 1

..........................

Answer 2

a)Se amplifica -11/2 cu 3,x cu 6 si 3/3 cu 2 si se elimina numitorul
7x-33=6x-6
7x-6x=-6+33
x=27

b)Se amplifica 3x cu 10,1/5 cu 2,-21/2 cu 5,4x cu 10
30x+2-105=40x-11
30x-40x=-11-2+105
-10x=92,inmultim cu (-1)
10x=92
x=92/10
x=46/5

c)Se amplifica 6x/5 cu 3,-31/3 cu 5 si 7x cu 15
18x-124=105x+16
18x-105x=16+124
-87x=140,inmultim cu -1
87x=-140
x=-140/87