Решите уравнения -0,5х+13,8=12,4 (2)2,5÷х+2,812=-7,188

-0.5х=12.4-13.8
-0.5х=-1.4
х=1.4:0.5
х=2.8

2)2.5:х+2.812=-7.188, х=(не)0
5/2×1/х+703/250=-7.188
5/2х+703/250=-7.188
5/2х=-1797/250-703/250
5/2х=-1780
5=-2х
-20х=5
х=-1/4, х=(не)0
х=-1/, или х=-0.25