3u=21-4u

Simple and best practice solution for 3u=21-4u 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 3u=21-4u equation: 


Simplifying
3u = 21 + -4u

Solving
3u = 21 + -4u

Solving for variable 'u'.

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

Add '4u' to each side of the equation.
3u + 4u = 21 + -4u + 4u

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

Combine like terms: -4u + 4u = 0
7u = 21 + 0
7u = 21

Divide each side by '7'.
u = 3

Simplifying
u = 3

See similar equations:

| 78=2(x+4) | | a-16.2=2.35 | | 3rs-9r+s-7rs+11r-s= | | -8r-5=-45 | | 9x-19=-91 | | 7=3x-4-1(x+2) | | (3z-7)(z+12)=0 | | 1.5v+2.6=-4.8 | | Y^4-6y^2+7=0 | | 35+(x-8)=595 | | -3x=24+12y | | t^2-8t-6=0 | | 46+2x=70+-6x | | 12+(x+15)=348 | | -y+217=22 | | 1.5v+2.6=4.8 | | 2(-3)+1=5(-3)-1 | | 4+3n=10 | | 4t+-2=14 | | (2x+2x)*x+(x^2)=54 | | 7x-5=-3x+10 | | 1.5v+26=-4.8 | | 9y+7=4-3y | | 2(-3)-1=5(-3)-1 | | 3*2x=9*7x | | 12+3x=-3y | | 12(x+15)=a | | 576+x^2=625 | | P(-3)=-2x^4+14x^2+6 | | 9p-10=6-p | | 2x+17=3x+10 | | 6y(-4)=24(-3y) |

Equations solver categories