Question

решите уравнения: а)3х+5 = -4х + 19 б) х+ 3(1 - 2х) =23

Answer 1

3х+5=-4х+19

3х+4х=19-5

7х=14

х=2

х+3(1-2х)=23

х+3-6х=23

-5х+3=23

-5х=20

х=-4

Answer 2

а)-19+5=-4х-3х
-14=7х
х=-14:7
х=-2
б)х+3-6х=23
х-6х=23-3
-5х=20
х=20:(-5)
х=-4