Question

ПОМОГИТЕ СРОЧНО! 4 ЗАДАНИЕ ДАМ 25 БАЛОВ​

Answer 1

$\displaystyle 1) \frac{1}{2}(6a-2)-\frac{1}{15}(5b+2)=\frac{1}{2}*2(3a-1)-\frac{1}{3}b-\frac{2}{15}=(3a-1)-\frac{1}{3}b-\frac{2}{15}=\\ \\ 3a-1-\frac{1}{3}b-\frac{2}{15}=3a-\frac{17}{15}-\frac{1}{3}b \\\\ 2)\frac{1}{2}(6*1\frac{1}{6}-2)-\frac{1}{15}(5*\frac{2}{5}+2)=\frac{1}{2}(1-2)-\frac{1}{15}(2+2)=\frac{1}{2}*(-1)-\frac{1}{15}*4=\\ \\ -\frac{1}{2}-\frac{4}{15}=-\frac{23}{30}$