x+21=7x-3

Simple and best practice solution for x+21=7x-3 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 x+21=7x-3 equation:


Simplifying
x + 21 = 7x + -3

Reorder the terms:
21 + x = 7x + -3

Reorder the terms:
21 + x = -3 + 7x

Solving
21 + x = -3 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
21 + x + -7x = -3 + 7x + -7x

Combine like terms: x + -7x = -6x
21 + -6x = -3 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + -6x = -3 + 0
21 + -6x = -3

Add '-21' to each side of the equation.
21 + -21 + -6x = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -6x = -3 + -21
-6x = -3 + -21

Combine like terms: -3 + -21 = -24
-6x = -24

Divide each side by '-6'.
x = 4

Simplifying
x = 4

See similar equations:

| 7x-24=5x-15 | | 44-7X=2X+16 | | 4y-2(y-5)=2 | | 7-9X=31-30X | | -71-10X=8X+19 | | 4X+8=-104-10X | | 5x-3=22 | | 5-5X=11-7X | | 11x=6x+20 | | 109-5X=10X+19 | | 3X+11=91-5X | | 6(18z+5)=x | | 7X-18=66 | | 2+3X=18+X | | 2x+12=5x-15 | | 6X-1=15X-73 | | 4X+19=11X-65 | | 8X-19=2X+5 | | 2X+46=5X+10 | | 12X+6=8X+22 | | 7X-8=66 | | -3.4+0.7p=0.9p+5.3 | | 7x-24=5x+18 | | -8+10r=-128 | | 4c+12=7c+11.64 | | 1x+1x+5x=68 | | (5x+8)-(-3x-2)= | | (x+4)+(-7x-6)= | | 7(w+1)=5(2w-3)+1 | | (5x+8)(-3x-2)= | | 3x+11=47 | | 4(y-6)=7y |

Equations solver categories