Răspuns:
Explicație pas cu pas:
a) 3(x+5)-6(x-2)=4(x+2)-5(x-4)+1
3x+15-6x+12=4x+8-5x+20+1
27-3x=29-x
-3x+x=29-27
-2x=2
x=2:(-2)
x=-1
b) 2(2x+7)+3(x-1)=6(x-3)+18
4x+14+3x-3=6x-18+18
7x+11=6x
7x-6x=-11
x=-11
c) 15(x-1)+4(2-3x)=11-2(x+4)
15x-15+8-12x=11-2x-8
3x-7=3-2x
3x+2x=3+7
5x=10
x=10:5
x=2
d) 2x+5+3(3x-1)=8(1-7x)+2+3x
2x+5+9x-3=8-56x+2+3x
11x+2=10-53x
11x+53x=10-2
64x=8
x=8/64
x=1/8
x=0,125
e) 10(3-x)+6(x+3)=19+7(2x-1)
30-10x+6x+18=19+14x-7
48-4x=14x+12
-4x-14x=12-48
-18x=-36
x=-36/-18
x=2
