1) 15у-8у=714 9ч+ч=500 10х+х=702 6х+3х-х=6400 6у+2у+25=65 - вопрос №11587149500107026364006225654633452 от newsergy81 11.04.2021 06:22

Question

Математика: 1) 15у-8у=714 9ч+ч=500 10х+х=702 6х+3х-х=6400 6у+2у+25=65

newsergy81 · Answer

15y-8y=7147y=714y=714:7y=1029x+x=50010x=500x=500:10x=5010x+x=70211x=702x=702:11x=63  9/116x+3x-x=64008x=6400x=6400:8x=8006y+2y+25=658y=65-258y=40y=40:8y=5...