21=3(x+5)

Simple and best practice solution for 21=3(x+5) 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=3(x+5) equation: 



21=3(x+5)

We move all terms to the left:

21-(3(x+5))=0



We calculate terms in parentheses: -(3(x+5)), so:

3(x+5)

We multiply parentheses

3x+15

Back to the equation:

-(3x+15)



We get rid of parentheses

-3x-15+21=0

We add all the numbers together, and all the variables

-3x+6=0

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

-3x=-6

x=-6/-3

x=+2

See similar equations:

| 9n2+2=6 | | 4(t+25)=4(t+50) | | 4(t+25)=4(t+50)-4(.15t) | | 4(x-1)-3(x-2)=-8, | | 12/4=16/p | | 4(t+25)=1400 | | 3=-x^2 | | 3n*3n=38 | | -1=5+x/x | | (55d+35)+15d=315 | | 12−5/1r=2r+1 | | 2x+3=20,x= | | 12−51​ r=2r+1 | | 12/4=27/p | | 3x+6=8x+19 | | -0.5x+1.1=2.9,x= | | 0=4+n+ | | 12/4=15/p | | 17x+15=-4 | | 4(−x−1)+3x+2=1 | | 2q-23=1 | | 2x+(-12)=-8 | | 6d-24=30 | | 3/1+a=4/5​ | | 0=4x2−12x+9 | | 2(4x-1)+3(2x+1)=5(3x-1) | | 2x+x=210 | | 3h-28=56 | | 8f/6f=30 | | 5(x-2)=2x+25 | | 23-2p=19 | | 6p+11=95 |

Equations solver categories