3x-21=x+7

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



3x-21=x+7

We move all terms to the left:

3x-21-(x+7)=0

We get rid of parentheses

3x-x-7-21=0

We add all the numbers together, and all the variables

2x-28=0

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

2x=28

x=28/2

x=14

See similar equations:

| 97+38+88+(x)=360 | | 1=8p+9 | | 219+(x)=360 | | 11n+5=60 | | 6n-14=34+n | | 6n-14=34=n | | 11k-4k+k-6k=18 | | a/3=32 | | 53+(x)=90 | | Y=350(1+0.75y | | 83+44+(x)=180 | | 83+44(x)=180 | | 98+(x)=180 | | 16x-10=8x+10 | | 5n-3-n=19 | | 4x+10=16x-10=8x+10 | | 5u(u=4) | | (8x+6)=10x-2 | | 14x=90+9x | | ×+3y=36 | | 5b+4b-6b=18 | | 3×-3×+2y=3 | | 3(2x+-1)+11=56 | | 18s-16s-s-s+3s=15 | | y4=28 | | 4x-3=8x-42 | | 75+25+x=180 | | 3^2x=9·3x-1 | | -10c+13c=-15 | | (100/1000)=10^x | | 9z-6z-2z+4z-3z=8 | | (100/x)=10^1 |

Equations solver categories