3(-4r-9)=21

Simple and best practice solution for 3(-4r-9)=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 3(-4r-9)=21 equation: 



3(-4r-9)=21

We move all terms to the left:

3(-4r-9)-(21)=0

We multiply parentheses

-12r-27-21=0

We add all the numbers together, and all the variables

-12r-48=0

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

-12r=48

r=48/-12

r=-4

See similar equations:

| |2x-1|=|x+4| | | (5x+3)=2(x+6) | | 3x－8=4x－5 | | 5y=2y9 | | 4*(2x)^1/2=-4x+6 | | 10(2+3x)=-40 | | 6x^+6x-3=0 | | x=0.27Y+40 | | x-17+40-5=10 | | 5x=30+18 | | -4(-8x-6)+6=-52 | | X(x-121)=0 | | F(x)=x/x-7 | | (1/x+2)+(1/x-2)=2/3 | | 7x+34=-2(1+7x)+2x | | 3. 2(2x-4)=24 | | (3y-3)^2-144=0 | | 18-6x=6(3x+1) | | -19=-10x+1 | | 48x-22=4 | | 2+g=38 | | n3+n=216 | | 3x-4=1-8(6+5x) | | 5y(y+7)(4y-7)=0 | | 5(3-4x)+3(1-x)=-39 | | b/–1+ 4.5=1.69 | | 7−–3g=–4.1 | | 14x-2=9x-2 | | f(-3+×)=9-6× | | 6d−14=64 | | 6=11y | | x=112-75 |

Equations solver categories