2/7 - 2/3) : 1 целая 1/7 + 0,9 * (-5/9)-0,6:(-1,2) помогите прошууу завтра самостоятельная

(2/7-2/3):1ц 1/7 + 0,9*(-5/9)-0,6:(-1,2) = -1/3 1) 2/7 - 2/3 = 6/21 - 14/21 = -8/21 2) -8/21 : 1ц 1/7 = -8/21 * 7/8 = -7/21 = -1/3 3) 0,9*(-5/9) = 9/10 * (-5/9) = -5/10 = -1/2 4) 0,6:(-1,2) = 6/10*(-10/12) = -6/12 = -1/2 5) -1/3 + (-1/2) = -1/3 - 1/2 = -2/6 - 3/6 = -5/6 6) -5/6 - (-1/2) = -5/6 +1/2 = -5/6 + 3/6 = -2/6 = -1/3

[latex] (\frac{2}{7} - \frac{2}{3}) :1\frac{1}{7}+0.9*(- \frac{5}{9} )-0,6:(-1,2)[/latex] [latex] \frac{6-14}{21} : \frac{8}{7} - \frac{9}{10} * \frac{5}{9} +0,5[/latex] [latex] (-\frac{8}{21}) : \frac{8}{7} - \frac{1}{2} + \frac{5}{10}[/latex] [latex] -\frac{8}{21} * \frac{7}{8} - \frac{1}{2} + \frac{1}{2}[/latex] [latex] -\frac{1}{3} - \frac{1}{2} + \frac{1}{2}[/latex] [latex] -\frac{1}{3} +0[/latex] [latex]- \frac{1}{3} [/latex]