If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21x+84/(x+4)(5x-20)=-5
We move all terms to the left:
21x+84/(x+4)(5x-20)-(-5)=0
Domain of the equation: (x+4)(5x-20)!=0We add all the numbers together, and all the variables
We move all terms containing x to the left, all other terms to the right
x+4)(5x!=20
x∈R
21x+84/(x+4)(5x-20)+5=0
We multiply parentheses ..
84/(+5x^2-20x+20x-80)+21x+5=0
We multiply all the terms by the denominator
21x*(+5x^2-20x+20x-80)+5*(+5x^2-20x+20x-80)+84=0
We multiply parentheses
105x^3-420x^2+420x^2+25x^2-1680x-100x+100x-400+84=0
We do not support expression: x^3
| 11/6=n+9/7 | | 7(y-4)=49 | | 66n^2+54n=0 | | (x/6)+(2x/3)=5 | | 12.7=j–3.4 | | 7a+4a=165 | | -3.5=v0.2 | | .5=n+1.28 | | 6x=15-18x | | 13x-5=4+11x | | -3.5=v | | 8-7m=-3+4 | | 3.8x+5.2×-6.7=11.3 | | 2x-6x-13=-4x+7-13 | | 20x^2+16x-4=0 | | 5(5x+2)=3(9x+2) | | 20=-2b+4 | | -25-6x=5 | | 100=16x+x-7 | | 3(w+8)=9w-6 | | X+12+5y+7+40=180 | | 4=x/4-3 | | 56.25=75-0.125d | | 14r-8=20 | | 0=4y^2-12y | | -2x+10=7x+37 | | a÷5.7=1.5 | | 32-4c=40 | | 6-9x+12=18-9x | | 3x-5=5x-41 | | 81/6=23/5+n | | -3x+35=-7(x-9) |