Помогите 8 с решением плиз

1) 2(x - 5) - 12 = 3(1 - x)      2x - 10 - 12 = 3 - 3x      2x + 3x = 10 + 12 + 3      5x = 25       x = 5 2) x - 10 = 5(2x + 1) + 57     x - 10 = 10x + 5 + 57     -10 - 5 - 57 = 10x - x    -72 = 9x     x = -8 3) 3(x - 5) + 10(x - 8) = 30      3x - 15 + 10x - 80 = 30      3x + 10x = 30 + 80 + 15      13x = 125      x = [latex] \frac{125}{13} [/latex]      x = 9[latex] \frac{8}{13} [/latex] 4) 2(x + 1) + 3(x - 2) = 24     2x + 2 + 3x - 6 = 24     2x + 3x = 24 + 6 - 2     5x = 28      x = [latex] \frac{28}{5} [/latex]      x = 5[latex] \frac{3}{5} [/latex]  

1) *** [latex]2*(x-5)-12=3*(1-x)[/latex] [latex]2x-10-12=3-3x[/latex] [latex]2x-22=3-3x[/latex] [latex]2x+3x=3+22[/latex] [latex]5x=25[/latex] [latex]x=25:5[/latex] [latex]x=5[/latex] **** 2) [latex]x-10 = 5*(2x+1)+57[/latex] [latex]x-10 = 10x+5+57[/latex] [latex]x-10x =57+5+10[/latex] [latex]-9x=72[/latex] [latex]x=72:(-9)[/latex] [latex]x=-8[/latex] **** 3) [latex]3*(x-5)+10(x-8)=30[/latex] [latex]3x-15+10x-80=30[/latex] [latex]13x-95=30[/latex] [latex]13x=30+95[/latex] [latex]13x=125[/latex] [latex]x=125:13[/latex] [latex]x= 9\frac{8}{13} [/latex] *** 4) [latex]2*(x+1)+3*(x-2)=24[/latex] [latex]2x+2+3x-6=24[/latex] [latex]5x-4=24[/latex] [latex]5x=24+4[/latex] [latex]5x=28[/latex] [latex]x=28:5[/latex] [latex]x=5 \frac{3}{5} [/latex]