5x - 16 = 40 + x; 4x - 10 = 15 - x; 3x - 6 = 5x + 2

5x-16=40+x
4x-10=15-x
3x-6=5x+2
4.(x-5)-3.(x+7)=-19
5.(x-3)-2.(x+6)=9
4(x+1)-3(x-2)=-(-5)
3/x+1/=-45+(-21)
3/x+5/=-9