3x+5=7x-21

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


Simplifying
3x + 5 = 7x + -21

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

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

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

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

Combine like terms: 7x + -7x = 0
5 + -4x = -21 + 0
5 + -4x = -21

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

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

Combine like terms: -21 + -5 = -26
-4x = -26

Divide each side by '-4'.
x = 6.5

Simplifying
x = 6.5

See similar equations:

| (2a-10b+5c)+(3a-12b-8c)= | | -p+1=1+6p | | 3.4y-5.2=3y+12 | | p+3=2p-14 | | 5(3x+1)=85 | | (2x-7)=(4x-21) | | 8+6T= | | 5x+x+2=60 | | 3400=4.00(2.50)+1000 | | 3400=4.00(x)+1000 | | 5/6=(x-4)/12 | | 39+8x= | | -7w-4=10-2(x+4) | | 4(5n-7)=4n-3 | | 85/1=m/5 | | 6+2(4x-5)=6-3(2x+1) | | -9.8=yover-4.7 | | n3/8=-4 | | x+20+x+x-5=180 | | 6.2=3a+4-2t | | 0.6(x+100)=0.66x-372 | | y+4.3=3.2 | | 6x-69=10x+139 | | 2x-39x=4+x-1 | | s+4s=70 | | 2x^2+22x+43=-5 | | -6x-13=17-5x | | -104+8x=40+2x | | 1.9y=24 | | 3x+7=9(x+5)+10x | | 20x^3+8x^2-55x-22=0 | | -(1-5b)=-5+5b |

Equations solver categories