Решите уравнения а)2х+7= -3 б) -7х-2х+3= -3 в) - вопрос №4984509273723383517321169 от mtoropchin 16.04.2020 23:34

Question

Математика: Решите уравнения а)2х+7= -3 б) -7х-2х+3= -3 в) 8-3/5х=17 г) -3х+2=11 д) -6х+9х+15= -3 е) 5-2/5х=11

mtoropchin · Answer

2х + 7 = - 32х = -3 - 72х = - 10х = - 5- 7х - 2х + 3 = - 3-9х = -3 - 39х = 6х = 6/9 = 2/38 - 3/5х = 173/5х = 8 - 173/5х = - 9х = - 9 : 3/5х = - 15- 3х + 2 = 11-3х = 11 - 2-3х = 9х = - 3-6х + 9х + 15 = - 33х + 15 = - 33х = -3 - 153х = - 18х = - 65 - 2/5х = 112/5х = 5 - 112/5х = - 6х = - 15...