Решите уравнение 3/5*(7/9х-1/3)=х-2 1/3 - вопрос №3844591357913213 от skvortsovaasya 27.11.2020 05:40

Question

Математика: Решите уравнение 3/5*(7/9х-1/3)=х-2 1/3

skvortsovaasya · Answer

3/5 • (7/9х - 1/3) = х - 2 1/33•7х/(5•9) - 3•1/(5•3) = х - 7/37х/15 - 1/5 = х - 7/3х - 7х/15 = 7/3 - 1/515х/15 - 7х/15 = 35/15 - 3/158х/15 = 32/15х = 32•15/(8•15) = 32/8 = 4х = 4...