21+3x=30

Simple and best practice solution for 21+3x=30 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+3x=30 equation: 


Simplifying
21 + 3x = 30

Solving
21 + 3x = 30

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 3x = 30 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 30 + -21
3x = 30 + -21

Combine like terms: 30 + -21 = 9
3x = 9

Divide each side by '3'.
x = 3

Simplifying
x = 3

See similar equations:

| 29+(-12)+3= | | -8b-4(9-5b)=-4(6+2b) | | 6(x-4)+18=30 | | -8x^2-5x=0 | | Ms+mz=r | | 2p+yr=r-9h | | 28x-1=28x | | -[6x-(2x+3)]=-2-[6(2x-3)-6x] | | A(3)=-2+(3-1)(5) | | y^2=6+y | | -4(x-7)=9-3x | | 9e^4=34 | | (a+b)(x+y)=ax+by | | 2-6y+4=4y+10-6y | | (a+b)(x+y)=a(X+y)+b(X+y) | | 18x+12=42 | | 11x+17x-9+3=-7x+3-9 | | x^2-10x+1-20-5x=0 | | (a+b)(x+y)=(a+b)(a+b)y | | -4(2-7)+3y=3(y-4) | | 4(3z-2)-9z-14=4-2(-3z+4) | | 9x+18=8x+14 | | 1+6n=2n+5 | | 2.8+10m=8.74 | | 8-(4x-8)=1-5x | | R^2-18r+21= | | 13-h-13=16-13 | | 3ln(x+4)-6ln(x^2+7)= | | 12u-7=6u | | K-4+1+7k= | | 35x+20(x+1)=40 | | V+2.5=7.17 |

Equations solver categories