21+7/3r=-21

Simple and best practice solution for 21+7/3r=-21 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 21+7/3r=-21 equation: 



21+7/3r=-21

We move all terms to the left:

21+7/3r-(-21)=0



Domain of the equation: 3r!=0

r!=0/3

r!=0

r∈R



We add all the numbers together, and all the variables

7/3r+42=0

We multiply all the terms by the denominator


42*3r+7=0

Wy multiply elements

126r+7=0

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

126r=-7

r=-7/126

r=-1/18

See similar equations:

| 2.2x+30.7=0.5-12.9x | | 7(5-2w)=-5(3w+2) | | |x-5|=x^2-7 | | 9x+12+3x=8 | | 3(5m+4)=5(6m-1) | | 2+v=18 | | 6.5-7x=x+2 | | -21=3(3x-3)+3(-2-x) | | 3/4v+25=33 | | 1/4(16x-33)-2=12 | | -42-9x=-5x+14 | | 4a+8=8-4a | | 4(y+4)-6y=22 | | X-2y^2+8=0 | | 9-9|n|=-54 | | 0.2x-1.2=3.8x+2.6 | | 3(x+4=7x-18 | | 5x+7x-8=9x+2 | | 5y-y(y)(y)=12 | | 1x-64=7x+128 | | 6n=3n+27 | | 3n+6=-52 | | 4x+5x-4=x+4 | | 5=10^(2x) | | |2x+4|=19 | | -5+25x+-40x-10=-4x-8 | | -13x-140=-7x-92 | | 1/2(x+1)+1/4=2/3x1/6x+3/4 | | -2(4x+2)=4x-12(x-1) | | -1+5p=79 | | -5x+4=2x+25 | | -3(x+10)=-10(x+1) |

Equations solver categories