Question

)))))))))))))))))помогите

Answer 1

$1) frac{x+9}{7} = 1+frac{x+1}{3};\ frac{3(x+9)}{21} = frac{21+7(x+1)}{21};\ 3x+27=21+7x+1;\ 3x - 7x = 21 + 1 -27;\ -4x=1 | : (-1)\ x = - frac{1}{4}; \\ 2) 1-frac{5x-2}{6}=frac{x-5}{9};\ frac{18-3(5x-2)}{18} = frac{2(x-5}{18};\ 18-15x+6=2x-10;\-15x-2x=-10-18-6;\17x = -34 | : (-17)\ x = 2;\\ 3) frac{3x+4}{5} + frac{x-7}{2} = frac{2(2x+3)}{5};\ frac{3x+4}{5} + frac{x-7}{2} = frac{4x+6}{5};\ 6x+8+5x-35=8x+12;\ 11x-27=8x+12;\ 11x-8x=12+27;\ 3x = 39 | : 3\ x=13;$

Answer 2

4?

Answer 3

НЕ успел решить