Объяснение:
8 2/3 •х^3 -16ау^2 +9ау^2 -9х^3=8 2/3 •х^3 -7ау^2 -8 3/3 •х^3=-1/3 •х^3 -7ау^2
27а^2 •z-24,89a^2 •z+3 1/5 •y^2-15y^2=2,11a^2 •z+3,2y^2 -15y^2=2,11a^2 •z-11,8y^2
3,12ab+7 5/6 •m^3 -4 1/6 •m^3 +16,82ab=19,94ab+3 2/3 •m^3
19,2x^2 -30 1/9 •kt+31kt-20x^2=-0,8x^2 -30 1/9 •kt+30 9/9 •kt=8/9 •kt-0,8x^2
