If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
(1/7)*(14*r+28) = r+2 // - r+2
(1/7)*(14*r+28)-r-2 = 0
1/7*(14*r+28)-r-2 = 0
1/7*(14*r+28)-r-2 = 0
r-2+4 = 0
r+2 = 0
r+2 = 0
r+2 = 0 // - 2
r = -2
r = -2
| 15-12+17-6= | | 2(z-3)-5=3(z-8) | | (A-4)(a+7)=-18 | | 22+x=37 | | 3z-5=5+z | | 5(x-2)=-3(x+3)+13 | | 7500.00+155.00x=92400.00 | | (2x-3)(2x+7)=-16 | | 9(8d-5)+5+13=12d-2 | | 5e(2x+1)=20 | | 112x-2x^2=1368 | | 5e^2x-1=20 | | 12x^2+26x+10= | | 2lnx=6.8 | | (x+3)(x+4)=30 | | (2t-3)(t+2)=0 | | (x+11)(4x+9)= | | 9a-b+4(2a-a)= | | (2x+1)(2x+1)=16 | | 1700^2-8.5%*9 | | -x+5y=19 | | X(x-17)=-72 | | e=m | | 2*(ln)x=6.8 | | x^2-4x=-9x+24 | | x(3)=39 | | Y=6-2(1) | | 2*lnx=6.8 | | 2*ln(x)=6.8 | | 2x^2+16x+64=88 | | 3t^2-19t=-6 | | 10-4x=32 |