8x-3/7-3(x+1)-2(x-3)
Даю 40б
[m]\frac{8x-3}{7}-\frac{3x+1}{10}-2=0[/m]
[m]\frac{10\cdot(8x-3)}{7\cdot 10}-\frac{7\cdot (3x+1)}{7\cdot 10}-\frac{2\cdot 70}{70}=0[/m]
[m]\frac{10\cdot(8x-3)-7\cdot (3x+1)-2\cdot 70}{70}=0[/m]
[m]\frac{10\cdot8x-10\cdot 3-7\cdot 3x-7\cdot 1-2\cdot 70}{70}=0[/m]
[m]\frac{80x-30-21x-7-140}{70}=0[/m]
[m]\frac{59x-177}{70}=0[/m]
[m]59x-177=0[/m]
[m]59x=177[/m]
[m]x=\frac{177}{59}[/m]
[m]x=3[/m]