If it's not what You are looking for type in the equation solver your own equation and let us solve it.
p in (-oo:+oo)
p-((2/3)*p)-(8/5) = 21/4 // - 21/4
p-((2/3)*p)-(8/5)-(21/4) = 0
p+(-2/3)*p-8/5-21/4 = 0
1/3*p-137/20 = 0 // + 137/20
1/3*p = 137/20 // : 1/3
p = 137/20/1/3
p = 411/20
p = 411/20
| 27x^3+21x+8=0 | | 26=3+17(n-1) | | sqrt(x+4)+4=sqrt(5x+4) | | 4+3(4x-4)=7-3(2x+1) | | 2n/3-5/7=38/21 | | 52=-2(22-b)+4(b+3) | | -0.016x^2+1.152x-15.2=0 | | 3x-5x+13=3x+33 | | h(x)=-0.016x^2+1.152x-15.2 | | m=2.27/740 | | -12/4= | | z/-11=2 | | 2x+x=5x-22 | | 6(2-9n)= | | -y^2+5=-4 | | a=.5ab | | 3x^2-30x+754=0 | | (18cos(3x))=0 | | 44w^2+w-21=0 | | 0.25x-1=0.5(x-1) | | x^3+x^2-17x-60=0 | | 0.7x+1.4=5x-2.04 | | x^2+25(i^2)=0 | | 100tanx=14 | | 8.4x-5.5y+7.2=0 | | 3x+16+5x=180 | | 30x^2+70x^6+60x^8= | | 8x-16(x+1)=-8x+20 | | 8.4x-5.5y+77.2=00 | | 3+7x+5= | | 8(y-4)=-2(5+y) | | 12x+27=15x+31 |