решите уравнение (13.4-y)×4.3-20.05=78.05+6.7y

(13.4-х)4.3-20.05=78.05+6.7 х 57.62-4.3х-20.05=78.05+6.7х 37.57-4.3х=78.05+6.7х 37.57-78.05=6.7х+4.3х -40.48=11х Х=-3.68