Question

упростите выражение {4 4/9x+3 1/3}*3-9 1/3x

Answer 1

{4 4/9x+3 1/3}*3-9 1/3x=(40/9х+10/3)*3-28/3х=40/3х+10-28/3х=12/3х+10=4х+10