7x-21=3x-5

Simple and best practice solution for 7x-21=3x-5 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=3x-5 equation:


Simplifying
7x + -21 = 3x + -5

Reorder the terms:
-21 + 7x = 3x + -5

Reorder the terms:
-21 + 7x = -5 + 3x

Solving
-21 + 7x = -5 + 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 + 7x + -3x = -5 + 3x + -3x

Combine like terms: 7x + -3x = 4x
-21 + 4x = -5 + 3x + -3x

Combine like terms: 3x + -3x = 0
-21 + 4x = -5 + 0
-21 + 4x = -5

Add '21' to each side of the equation.
-21 + 21 + 4x = -5 + 21

Combine like terms: -21 + 21 = 0
0 + 4x = -5 + 21
4x = -5 + 21

Combine like terms: -5 + 21 = 16
4x = 16

Divide each side by '4'.
x = 4

Simplifying
x = 4

See similar equations:

| 13r-37=9r+23 | | 3.2=-0.4n | | 23x=1104 | | 3.2=-0.4 | | 2(10)+2(x+2)=28 | | 3(x+2)=5-2(x-3) | | .75j-4=.25j+22 | | 5x^3+24x^2-5x= | | Y=-0.60(55)+138 | | 4(3c-5)=5(2c+4) | | 17-6=47+10x | | y+8=-11 | | 16-2x-8r+xr= | | 23x+5=120 | | Y=-0.60x(55)+138 | | Y=-0.60(45)+138 | | 0.010= | | Y=-0.60(35)+138 | | 2.5(70-x)=10+0.5x | | x^4+5x^2-14=0 | | y=-0.60(25)+138 | | -(w+15)=3(w-4) | | n-6=13 | | 5u-7=23u+2 | | 9x+15=10x+5 | | 10=12-4x | | 6(s+1)+2=8(s-3)+5 | | 3a=35 | | 3x-4(2x+5)=-16+13x | | 4n-33=7n-45 | | 3(g-4)-2=10 | | p=-18+7 |

Equations solver categories