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)
R/49 = 13 // - 13
R/49-13 = 0
1/49*R-13 = 0 // + 13
1/49*R = 13 // : 1/49
R = 13/1/49
R = 637
R = 637
| -4(3-5x)=-6x+9 | | 1/7w=5/6 | | ∛(-27)/∛8 | | -8x+-40=4x+68 | | 9(2x+1)=9x-18 | | x^3-3x-3+2=0 | | -4(-7x+3)+5x=3 | | 7-4(-6x-6)=11 | | -6c-4=332 | | M/3-2 | | b^3/b^5 | | m/4=1.75 | | 5(r-2)=10 | | 3y-5x=2 | | -2(4x+2)=-2x | | 9x^3(-5x^3+8x-7)= | | 6+6=7+17 | | y=5(-3)-7 | | -5/3-(-9/5) | | (8v^5+6v)-(-8v^5-6v+6)= | | -7(2+6a)=196 | | 12x^3+6x^2-18x= | | W/15=300 | | W/15=309 | | 15+w=300 | | 3+log[4](2x)=4 | | W-15=300 | | 7x-21=35 | | Y/-10=-8 | | (5x/6y^5)^2 | | 1/5-4/3 | | 4(k+3)=24 |