-1=8+21x

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


Simplifying
-1 = 8 + 21x

Solving
-1 = 8 + 21x

Solving for variable 'x'.

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

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

Combine like terms: 21x + -21x = 0
-1 + -21x = 8 + 0
-1 + -21x = 8

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

Combine like terms: -1 + 1 = 0
0 + -21x = 8 + 1
-21x = 8 + 1

Combine like terms: 8 + 1 = 9
-21x = 9

Divide each side by '-21'.
x = -0.4285714286

Simplifying
x = -0.4285714286

See similar equations:

| 8y=9x+9 | | 15=-11b | | (2/3)(-4) | | 6=-2+v | | -3(5x)+2=-28 | | T*3-8=10 | | n^2+2=5 | | 437= | | 5(-x)+x=-8 | | 4mn= | | A*6=3+12 | | -5(3y)= | | -5=q-1 | | g/27=1/6 | | -8-10x+7= | | 61=3w+16 | | S+11=-5 | | 5-(3x-9)-2x= | | 3y+6=2y+15 | | 15X^4-21X^3-18X^2=0 | | cos^2(3x)+-8cos(3x)-9=0 | | 2.50w=75.00 | | (6x+14)+3x+29=90 | | 102=-16x+16-19 | | 21X^4-21X^3-18X^2=0 | | 2x+31=90 | | 130y+150x=1920 | | cos^2(6x)+-8cos(3x)+5=0 | | 3w+4=18+10w | | 3(x-4)=-6-x | | 21X^3-15X^2=0 | | 2R+3=19-2r |

Equations solver categories