7x-21=3+x

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


Simplifying
7x + -21 = 3 + x

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

Solving
-21 + 7x = 3 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-21 + 7x + -1x = 3 + x + -1x

Combine like terms: 7x + -1x = 6x
-21 + 6x = 3 + x + -1x

Combine like terms: x + -1x = 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:

| 70(0.06)+x(0.09)=(70+x)0.07 | | 13=4(3x-7)+5 | | 5(x+1)-x=4x+15 | | -16=-3x-x | | 3r-24=2r+15 | | 3x-2x+4x=5x-4-8 | | -(7-8x)=47 | | 16d-2=12d+14 | | 1-i+i^2=234 | | 12=1-2n+5 | | 1-i+i^2=0234 | | h(3)=8y-6 | | 1-i+i^2=0.75 | | 4(9c-5)=-27 | | 3x+19=16x+2 | | 4x+6=3z-8 | | h(y)=8y-6 | | 5x+9=8x-4x | | 1-i+i^2=0 | | 2d+8+4d=-20 | | i=-1 | | 18*73.7*x=145.7*1.4*4.18 | | 3s+6= | | i^2+24i+144=0 | | -6+g=-6+18g | | 3sin^2+2=0 | | -3x+5y-2z=60 | | 625=25y | | 6(7x-2)=-12+42x | | 18*73.7*x=45.7*1.4*4.18 | | 4(x+6)=2(x+3) | | -15+d=-12 |

Equations solver categories