21=3(2x-1)

Simple and best practice solution for 21=3(2x-1) 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(2x-1) equation:


Simplifying
21 = 3(2x + -1)

Reorder the terms:
21 = 3(-1 + 2x)
21 = (-1 * 3 + 2x * 3)
21 = (-3 + 6x)

Solving
21 = -3 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
21 + -6x = -3 + 6x + -6x

Combine like terms: 6x + -6x = 0
21 + -6x = -3 + 0
21 + -6x = -3

Add '-21' to each side of the equation.
21 + -21 + -6x = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -6x = -3 + -21
-6x = -3 + -21

Combine like terms: -3 + -21 = -24
-6x = -24

Divide each side by '-6'.
x = 4

Simplifying
x = 4

See similar equations:

| 27=3(5x-9) | | 8+2x=8+7x | | 2x=10+3y | | 1.5+s=13.5 | | 6x^3+3x^2+5x+1=0 | | 66=6(6x-7) | | 84=7(5x-3) | | (3x+7)(4x+5)(3x-7)= | | 15x^2-20x-240=0 | | 7=2(2x-7) | | 5x-7=6x+22 | | 4=3(x-8) | | 3x+21+2x-4=51-4x+29 | | 14a-16=15a+8 | | 3=2(x-7) | | xy=4-x | | X=y^2+6y+5 | | 14(-6n)= | | x^2+12x=11 | | 4m-2m+m=-15 | | 86=-2(-5x-3) | | y(4-x)=4 | | 6x*x+8x-16=26-21x | | 2x^3+4x^2+5x+1=0 | | G(-2b)=6(-2b)+7 | | 2e^5x-2=12 | | h=100t-5t^2 | | 2xy+5=15 | | 2x+13=4x-9 | | xy+7=23 | | -9+4r=4r+-9 | | (3x-9)=184 |

Equations solver categories