Решите уравнение:
1.
а) 3х=15 в) 3х+х+2=18
б) 4х-2=14 г) 3х-12=х
2.
а) 4х-2=2х+6 в)2х+6=4х-2
б) 2х-2=6+4х г) -4х-4=2х+8
8,154/2,7-19,296/3,2-38,872/4,3

1.а) 3х = 15;х = 15:3;х = 5;б) 4х - 2 = 14;4х = 14 + 2;4х = 16;х = 16 : 4;х = 4;в) 3х + х + 2 = 18;4х + 2 = 18;4х = 18 - 2;4х = 16;х = 16 : 4;х = 4;г) 3х - 12 = х;3х - х = 12;2х = 12;х = 12 : 2;х = 6.2. а) 4х - 2 = 2х + 6;4х - 2х = 6 + 2;2х = 8;х = 8 : 2;х = 4;б) 2х - 2 = 6 + 4х;2х - 4х = 6 + 2;-2х = 8;х = 8 : (-2);х = -4;в) 2х + 6 = 4х - 2;2х - 4х = -2 - 6;-2х = -8;х = -8 : (-2);х = 4;г) -4х - 4 = 2х + 8;-4х - 2х = 8 + 4;-6х = 12;х = 12 : (-6);х = -2.8,154 / 2,7 - 19,296 / 3,2 - 38,872 / 4,3 =1) 8,154 / 2,7 = 3,02;2) 19,296 / 3,2 = 6,03;3) 38,872 / 4,3 = 9,04;4) 3,02 - 6,03 = -3,01;5) -3,01 - 9,04 = -12,05.