105/21=20/x

Simple and best practice solution for 105/21=20/x equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 105/21=20/x equation: 



105/21=20/x

We move all terms to the left:

105/21-(20/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+20/x)+105/21=0

We add all the numbers together, and all the variables

-(+20/x)+5=0

We get rid of parentheses

-20/x+5=0

We multiply all the terms by the denominator


5*x-20=0

We add all the numbers together, and all the variables

5x-20=0

We move all terms containing x to the left, all other terms to the right

5x=20

x=20/5

x=4

See similar equations:

| y=-4(9)+19 | | 5m+1=3m+11 | | 3-3x=7+8x | | 15=1.5x+3 | | 4p+9=4p-11 | | 7x+2=9x-5 | | 7d+4d+2d-5=2d | | 6(4-2.5y)+3y=8+4(4-2.5y)+(-2y) | | 3w=36w= | | d-(19)=-46 | | 6q=-582 | | -5-20w=-19w=15 | | 317=y-458 | | z-(74)=-19 | | -10+n/2=-14 | | (k/5)=7 | | 5x-3=-4x-1 | | −4(−x+1)−3x−5=  11 | | -1+5a=-76 | | x+(2x-6)+(2x-14)=180 | | 4x+12=−2xx | | 224.50=8.50x+12 | | 9f+5=-5 | | -6y+45=-3(y-6 | | n+19=89 | | 14w/2=13 | | 4a-2=-58 | | 6*5*4*7+z=9831 | | (s/3)=-8 | | 224.50=8x+12 | | -46=19-d | | 35=v-30 |

Equations solver categories