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)
(1/2)*(5*x-7) = (1/3)*(-(10*x)-21) // - (1/3)*(-(10*x)-21)
(1/2)*(5*x-7)-((1/3)*(-(10*x)-21)) = 0
(1/2)*(5*x-7)+(-1/3)*(-10*x-21) = 0
1/2*(5*x-7)-1/3*(-10*x-21) = 0
1/2*(5*x-7)-1/3*(-10*x-21) = 0
35/6*x+7/2 = 0
35/6*x+7/2 = 0
35/6*x+7/2 = 0 // - 7/2
35/6*x = -7/2 // : 35/6
x = -7/2/35/6
x = -3/5
x = -3/5
| 3(2x-1)=2(2x+1) | | a+240=6.25a | | 28=x*48 | | 15=x*58 | | 4(2x-3)+1=3(4x-5)-x | | 3^5x/4-2 | | x*x-2*x+0.75=0 | | (12/3x-16-3)^-1/3 | | 1.5(x-2)=1.5x+n | | Y-2+9y=3+8y-5 | | 4(2-x/6)=10 | | x(x+3x)=1.25 | | -9(h+8)=45 | | 0.33(0.2x-1)+0.35x=0.05(3x+7)-1.44 | | [[[[b]^[[[1]/[3]]]]]/[[[b]^[[[1]/[4]]]][[b]^[ eg;[[[1]/[2]]]]]]] | | P-10=87 | | ((((b)^(((1)/(3)))))/(((b)^(((1)/(4))))((b)^(-1/2)))))) | | 12-3n/-3n-9 | | 4+8(2g-4)=24 | | 4x+3x-20=0 | | 2/5x–7=-11 | | 4[(m/2)-7]=24 | | P+8=52 | | 3/7t-5.2=1.35+5/6t | | F(x)=10x+9 | | 2A+5a=42 | | F(4)=6-5X | | 7d+22=-26+13d | | 17s=119 | | 17q-1=52q-71 | | 64b-8b^2=24a-2a^2 | | 6z+3=s-3 |