Question

5x-8=3x+5    2x+13=0

Answer 1

$5x-8-3x+5=0; 2x-3=0; 2x=3; x=1,5; 2x+13=0; 2x=-13; x=-6,5$

Answer 2

5х-8=3х+5

5х-3х=8+5

2х=13

х=13:2

х=6,5

===============================

2х+13=0

2х=-13

х=-13:2

х=-6,5