If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(-2/7)*(2*x+6) = (3/28)*x-15 // - (3/28)*x-15
(-2/7)*(2*x+6)-((3/28)*x)+15 = 0
(-2/7)*(2*x+6)+(-3/28)*x+15 = 0
(-3*x)/28-2/7*(2*x+6)+15 = 0
(-2/7*28*(2*x+6))/28+(-3*x)/28+(15*28)/28 = 0
15*28-2/7*28*(2*x+6)-3*x = 0
420-19*x-48 = 0
372-19*x = 0
(372-19*x)/28 = 0
(372-19*x)/28 = 0 // * 28
372-19*x = 0
372-19*x = 0 // - 372
-19*x = -372 // : -19
x = -372/(-19)
x = 372/19
x = 372/19
| 1/6*40= | | 3x+12/5x-45 | | h=-16t^2+56t+5 | | -40/-8= | | f(x)=2x^3+12x^6+16x | | m+3m+6=4m-9+15 | | 13x^2-11x+1=0 | | 10(-9)= | | y^3+8y^2=20y | | -9(x+9)+x=3(-9-x) | | 25=5x-10 | | -5t^2+40t+3=0 | | 12/8=(5+x)/(x-3) | | -5(-7)(10)= | | 7(u-2)-1=-5(-3+5)-2u | | -8/8-1=-2 | | 40/-4= | | 3x^2+(x-1)=4 | | 3x+4/5+x+17/4=11 | | -3.28=8(1.5y-.5) | | -3d/-4+5=11 | | 3s^2=12s | | 12(4)= | | 11.17=2.49+1.4a | | 16t^2-96t+80=0 | | -22/-11= | | m/2=-15 | | 7-d=1.3 | | 11.17=2.49-1.24a | | 10(-4)= | | (-w/4)+3=8 | | 2x+6=(4/3)(X) |