7x+-21=0

Simple and best practice solution for 7x+-21=0 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+-21=0 equation: 


Simplifying
7x + -21 = 0

Reorder the terms:
-21 + 7x = 0

Solving
-21 + 7x = 0

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 7x = 0 + 21

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

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

Divide each side by '7'.
x = 3

Simplifying
x = 3

See similar equations:

| 3x+10=-3x-19 | | x*y+4-25=0 | | -X+5X=18-4 | | -X+4+5X=8 | | 8a+3a+31=4+4a+6 | | 7x+30=-3x | | Y-9x=-72 | | w/5=-18 | | q-4=-17 | | ln(7)=ln(x-7)-ln(4) | | 7+z=-17 | | b/7=-4 | | -t=-6 | | -33+p=-37 | | 7c-3=11 | | -32=t+17 | | -1/6y-1/22/3 | | -13-(4x+8)= | | 63-7(9-4n)= | | 6X-12X=6-8 | | 9+6(b-2)= | | log(6)10=x | | 8-4=9 | | 9x+2=3x+28 | | 2x/8=-4/3 | | 2+c=-3 | | -4(3a+2)-13= | | kx-1=w | | -2c-4=-4 | | 2/3x-3=13 | | 0.375d=6 | | 0.375xd=6 |

Equations solver categories