Question

2,7+1,9=2х+1,5.... 13/18х+13 = 7/12х+8

Answer 1

2x=4,6-1,5
2x=3,1
x=3,1:2
x=1,55

13/18x-7/12x=8-13
26/36x-21/36x=-5
5/36x=-5
x=-5:5/36=-5*36/5=-36