Решите уравнения (3 1/2х-1 5/14)*42=6 8,2: х+1 7/12=7 - вопрос №312151442682171275187381931 от supervip2001 12.02.2021 21:06

Question

Математика: Решите уравнения (3 1/2х-1 5/14)*42=6 8,2: х+1 7/12=7 5/18

supervip2001 · Answer

(3 1/2 х - 1 5/14)*42=63 1/2 х -1 5/14=6/423 1/2 х=2/14+1 5/143 1/2 х=1 7/14х=1 1/2 : 3 1/2х=3/2 * 2/7х=3/78,2 :х+1 7/12=7 5/188,2:х=7 5/18 - 1 7/128,2:х=7 10/36 - 1 21/368,2:х=5 25/368,2:х=5 25/36х=8,2 :5 25/36х=41/50 * 36/205х=18/125=0,144...