21x+1=3x-8

Simple and best practice solution for 21x+1=3x-8 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 21x+1=3x-8 equation:


Simplifying
21x + 1 = 3x + -8

Reorder the terms:
1 + 21x = 3x + -8

Reorder the terms:
1 + 21x = -8 + 3x

Solving
1 + 21x = -8 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
1 + 21x + -3x = -8 + 3x + -3x

Combine like terms: 21x + -3x = 18x
1 + 18x = -8 + 3x + -3x

Combine like terms: 3x + -3x = 0
1 + 18x = -8 + 0
1 + 18x = -8

Add '-1' to each side of the equation.
1 + -1 + 18x = -8 + -1

Combine like terms: 1 + -1 = 0
0 + 18x = -8 + -1
18x = -8 + -1

Combine like terms: -8 + -1 = -9
18x = -9

Divide each side by '18'.
x = -0.5

Simplifying
x = -0.5

See similar equations:

| (-3-2i)-(-5+i)= | | 5(x-8)=3x-38 | | 9/m=3 | | 0=-3(n-8) | | 9r-8r=14 | | -3(-4x+3)+4(6x+1)=43 | | -6x^3+7x^2+6x+2= | | -4(n-19)=0 | | 6z^2+17z+5=0 | | -5(k+1)-k-6=-6(k+3)+7 | | 7a-3a-3=17 | | 2/v=-2 | | -9=-3(p-5) | | 2x+7+3x+3=180 | | 6=3(c-13) | | 2y-y-1=12 | | 9x-4[x-3]-15x+8x+7x=72 | | 80+10x=5(x+20) | | 5=10p | | 6z-z=-15 | | x^2-5x-3000=0 | | -7(v+3)+3v+7=5v+10 | | (3x^2)+6x-1=0 | | 3x-1/x=5/5x-8 | | 80+10x=5x+20 | | 19+5g=49 | | 3p+-4p=9 | | -2+6w=70 | | 4=10-3n | | m/9-19=22 | | -3x^2-42x+20=y | | 5=2q-3 |

Equations solver categories