Răspuns:
1.
x+2(x-1)=16-6x => x+2x-2=16-6x => 3x-2 = 16-6x => 3x+6x=16+2 => 9x=18 => x=2
2.
5x+7=2(x+1)+5(1-x) => 5x+7=2x+2+5-5x => 5x+7=-3x+7 => 5x+3x=7-7 => 8x=0 => x=0
3.
3x+72=3(x+24) => 3x+72=3x+72 => ecuatia este corecta, dar nu are solutii
4.
-8y+2^3*10^3=0 => -8y+8*1000=0 => -8y+8000=0 => 8y=8000 => y=1000
5.
2x+7^2=-11 => 2x+49=-11 => 2x=-60 => x=-30
6.
3x+4=3(x+9) => 3x+4=3x+27 => 3x-3x=27-4 => 0=23 imposibil => ecuatia nu are solutii
7.
4(x-8)=52 => 4x-32=52 => 4x=84 => x=21
8.
3x-7=5x+3 => 3x-5x=3+7 => -2x=10 => x=-5
9.
2x-3+4(x+1)=-29 => 2x-3+4x+4=-29 => 6x=-29+3-4 => 6x=-30 => x=-5
꧁Sper ca te-am ajutat!꧂
