1/14x-2/7*1 1/4=5/56 7 1/4y-y=9 3/8 7x-0,2x=30,6 - вопрос №411139411427114556714938702306 от onion2 03.12.2020 14:18

Question

Математика: 1/14x-2/7*1 1/4=5/56 7 1/4y-y=9 3/8 7x-0,2x=30,6 решите уравнения

onion2 · Answer

1/14х-2/7*1 1/4=5/561/14х-2/7*5/4=5/561/14х-5/14=5/561/14х=5/56+5/141/14х=5/56+20/561/14х=25/56х=25/56:1/14х=25/56*14/1х=6 1/47 1/4у-у=9 3/829/4у-4/4у=9 3/825/4у=9 3/8у=9 3/8:25/4у=75/8*4/25у=3/2у=1 1/27х-0,2х=30,66,8х=30,6х=30,6:6,8х=4,5...