-7x-7=21

Simple and best practice solution for -7x-7=21 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 -7x-7=21 equation:


Simplifying
-7x + -7 = 21

Reorder the terms:
-7 + -7x = 21

Solving
-7 + -7x = 21

Solving for variable 'x'.

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

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

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

Combine like terms: 21 + 7 = 28
-7x = 28

Divide each side by '-7'.
x = -4

Simplifying
x = -4

See similar equations:

| 50=-100+4000-1600 | | c^2+25=10c | | h/5=215 | | 30=18+x+y | | 5x-8y=32 | | 7at^2-28a=0 | | (10r+7)(3r-4)=0 | | 28a^2-22a-30= | | -5(4y-2)=-2(3+6y) | | 5-4t=12 | | 7x^2+42x+35=0 | | 7a^2-28a=0 | | -70+-90= | | 8(1+5y)+5=13+5y | | 11(c-5)+6=5+c-54 | | 13x+5=x | | 0.4(6+0.2t^2)+1= | | 70a^2-22a-12= | | x^4-x^3-6x=0 | | 15y+30=0 | | 27x^4+64x= | | X^2+4+20=0 | | N=96+-96 | | 5x-10+3x-8+70=180 | | -8(-8y-6)=-6y-22 | | 40=5x+3x | | 64y-6=-6y-22 | | 8x+x=81 | | .4x+.5(20-x)=.10(66) | | 512x^3+27y^6=0 | | y=4x^4+17x^2+4 | | .33(12-6x)=4-2x |

Equations solver categories