Question

Rezolvaţi complet va rog din suflet
a)5(2x-1)+3(x-1)-6(7x-12)=15(8-x)-84
b)2(3x+4)-3x-2=6(2x-3)+2(3-4x)+5(2x-3)
c)4(9x-4)+2(2x-7)-7x=3(3x-10)+5(x-22)-4
d)2(5x-4)-(3x+2)+11=-3(-5x+10)+3x-6(4x-3)
Dau coronita daca nu le puteti pe toate patru macar trei sau doua

Answer 1

a) 10x - 5 
 3x - 3 - 42x + 72 = 120 - 15x - 84
- 39x + 15x = - 69 + 36
- 24x = - 33
x = 33/24 sau x = 11/8
b) 6x + 8 - 3x - 2 = 12x - 18 + 6 - 8x + 10x - 15
 3x - 14x = - 6 - 27
- 11x = - 33
x = 33/11
x = 1
c) 36x - 16 + 4x - 14 - 7x = 9x - 30 + 5x - 110 - 4
33x - 14x = 30 - 144
19x = - 114  
x = - 114/19
x = - 6
d) 10x - 8 - 3x - 2 + 11 = 15x - 30 + 3x - 24x + 18
7x + 6x = - 1 - 12
13x = - 13
x = - 13/13
x = - 1