Решите -7х+8=9х; -х+2=4х; -х-7=-5х; -5х+2=-10х; - вопрос №55834697892475521023841096 от small2005 07.09.2020 14:40

Question

Математика: Решите -7х+8=9х; -х+2=4х; -х-7=-5х; -5х+2=-10х; -2х+3=-8х; -4х=-10х-9; 6+3х=4х-1; -1+2х=10х+3; -4+3х=8х+5; 9+4х=8х-9; 2+8х=3х+9; 6-2х=3х-10

small2005 · Answer

-7x + 8 = 9x-7x - 9x = -8-16x = -8x = -x + 2 = 4x-x - 4x = -2-5x = -2x = -x - 7 = -5x-x + 5x = 74x = 7x = -5x + 2 = -10x-5x + 10x = -25x = -2x = -2x + 3 = -8x-2x + 8x = -36x = -3x = -4x = -10x - 9-4x + 10x = -96x = -9x = 6 + 3x = 4x - 13x - 4x = -1 - 6-x = -7x = 7-1 + 2x = 10x + 32x - 10x = 3 + 1-8x = 4x = -4 + 3x = 8x + 53x - 8x = 5 + 4-5x = 9x = 9 + 4x = 8x - 94x - 8x = -9 - 9-4x = -184x = 18x = 2 + 8x = 3x + 98x - 3x = 9 - 25x = 7x = 6 - 2x = 3x - 10-2x - 3x = -10 - 6-5x = -165x = 16x = ...