Решите уравнения x+3/20=5/12+2/9 5/7-y=1/54+1/9+10/27 - вопрос №32051229571541910274513161103421579 от lisaezhikova 31.07.2020 16:26

Question

Математика: Решите уравнения x+3/20=5/12+2/9 5/7-y=1/54+1/9+10/27 (4/5-k)-1/3=1/6-1/10

lisaezhikova · Answer

Х+3/20=5/12+2/9х+3/20=15/36+8/36х+3/20=23/36х+27/180=115/180х=115/180-27/180х=88/180=44/90=22/455/7-у=1/54+1/9+10/275/7-у=1/54+6/54+20/545/7-у=27/545/7-у=1/210/14-у=7/14у=10/14-7/14у=3/14(4/5-k)-1/3=1/6-1/104/5-k=1/6-1/10+1/34/5-k=10/60-6/60+20/604/5-k=24/60=2/5k=4/5-2/5k=2/5...