Răspuns:
10(x-1)-3(4x-7)-2=4(3x-5)+1
10x-10-12x+21-2=12x-20+1
-2x+9=12x-19
-2x-12x= -19-9
-14x= -28 /×(-1)
14x=28
x=28/14
=> x=2