21=7x-4x+3

Simple and best practice solution for 21=7x-4x+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 21=7x-4x+3 equation:


Simplifying
21 = 7x + -4x + 3

Reorder the terms:
21 = 3 + 7x + -4x

Combine like terms: 7x + -4x = 3x
21 = 3 + 3x

Solving
21 = 3 + 3x

Solving for variable 'x'.

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

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

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

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

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

Combine like terms: 3 + -21 = -18
-3x = -18

Divide each side by '-3'.
x = 6

Simplifying
x = 6

See similar equations:

| 9k-6-6k=6 | | d^2-d-6=0 | | 6+2x=3x-4 | | 3(5+-1y)+1y=11 | | 5+17x-3=9x+77-7x | | 4x^2+7x-2x(2x-5)=17 | | 3x(5+-1y)+1y=11 | | 3x^7+192x^4= | | 12+10/2-3 | | 11m=5m+24 | | 4x+8=2x-7 | | n^2-34n+288=0 | | (5n+3)-(n+1)=5 | | 73=2x+7x+10 | | 4s+17s=105 | | 2x-y+x+y=180 | | 13-10x=213-45x | | (y/13)=-12 | | 3x+1y=11 | | 3z+6u+8x+9+u= | | 10q-43q+45=0 | | 0=-5t^2+10t+50 | | 0=-5t^2+10t+50 | | 125+x^3= | | 86-2x=4x+8 | | 2x^5+250x^2= | | 2m^2+6m=22 | | 2x^3-2xy^2= | | 5-2(r-2)=2r | | 3.1q-1.4-5.5q=-3.4q-4.2 | | 25x^2y-10xy-35y= | | -(7y+1)-(-6y-3)=0 |

Equations solver categories