1) 3x+10=5x 2) -100+4x=15 3) -8+2x=14 4) x+3=8x - вопрос №774710913105210041538214438 от dianabalaganska 24.11.2020 23:37

Question

Математика: 1) 3x+10=5x 2) -100+4x=15 3) -8+2x=14 4) x+3=8x решите умоляю

dianabalaganska · Answer

1) 3х + 10 = 5х3х - 5х = - 10- 2х = - 10х = - 10 : (- 2)х = 53 * 5 + 10 = 5 * 5   15 + 10 = 25            25 = 252)- 100 + 4х = 154х = 100 + 154х = 115х = 115 : 4х = 28,75- 100 + 4 * 28,75 = 15         - 100 + 115 = 15                        15 = 153)- 8 + 2х = 142х = 8 + 142х = 22х = 22 : 2х = 11- 8 + 2 * 11 = 14     - 8 + 22 = 14              14 = 144)х + 3 = 8хх - 8х = - 3- 7х = - 3х = - 3 : (- 7)х = 3/73/7 + 3 = 8 * 3/7   3 3/7 = 24/7   3 3/7 = 3 3/7...