27a+12a=\dfrac{2}{7}a+\dfrac{1}{2}a=72a+21a= 56b−12b=\dfrac{5}{6}b-\dfrac{1}{2}b=65b−21b=

34c−17c=\dfrac{3}{4}c-\dfrac{1}{7}c=43c−71c=

58d+112d=\dfrac{5}{8}d+\dfrac{1}{12}d=85d+121d=

910e+25e=\dfrac{9}{10}e+\dfrac{2}{5}e=109e+52e=

zadorina66    2   02.12.2021 10:16    18