21=-7(2x+-1)

Simple and best practice solution for 21=-7(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=-7(2x+-1) equation:


Simplifying
21 = -7(2x + -1)

Reorder the terms:
21 = -7(-1 + 2x)
21 = (-1 * -7 + 2x * -7)
21 = (7 + -14x)

Solving
21 = 7 + -14x

Solving for variable 'x'.

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

Add '14x' to each side of the equation.
21 + 14x = 7 + -14x + 14x

Combine like terms: -14x + 14x = 0
21 + 14x = 7 + 0
21 + 14x = 7

Add '-21' to each side of the equation.
21 + -21 + 14x = 7 + -21

Combine like terms: 21 + -21 = 0
0 + 14x = 7 + -21
14x = 7 + -21

Combine like terms: 7 + -21 = -14
14x = -14

Divide each side by '14'.
x = -1

Simplifying
x = -1

See similar equations:

| 3a-1+2a+4=a | | 22-11=x+40 | | 10(c+9)+5(c-3)= | | -2x+3y=-1 | | 3x-x+4=4(2x-4) | | 6a-2+2a+4=a | | 8d-2=2d+22 | | -3(x+5)=-3(x-1) | | 6a-2+(2a+4)=a | | 1.5a-0.2(5a-6)= | | -6-2x=9 | | 3x^2-7x-50=0 | | -10+(5y-6)= | | 6+3t+9+(-6t)+2t= | | C=15x+2000 | | s^2+12s=-27 | | 12-5y=-48 | | z^2-6z+18=0 | | 10+0.15x=16.45 | | 0=0.3x-10 | | 0.7(0.1x+0.7)=0.7 | | 0.125x=0.0025(5x+1) | | 7a-22=3a+22 | | r-32=514 | | Y=0.3x-10 | | 12x+7=4x+13 | | 6x-3=7x-14 | | 20k-8=-8+20k | | x/4+1=-2 | | 88=8x-4(2+6x) | | 8a+5c=4241 | | 6x+12=144 |

Equations solver categories