5×+14=3×-2
5(×+2)+15=8 (×+2)

5×+14=3×-25x -3x=-2-142х=-16 |:2х=-85(×+2)+15=8 (×+2)5(х+2)-8(х+2)=-15(5-8)*(х+2)=-15-3(х+2)=-15 |:3х+2=5х=5-2х=3