3x+4(x-10)=21

Simple and best practice solution for 3x+4(x-10)=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+4(x-10)=21 equation:


Simplifying
3x + 4(x + -10) = 21

Reorder the terms:
3x + 4(-10 + x) = 21
3x + (-10 * 4 + x * 4) = 21
3x + (-40 + 4x) = 21

Reorder the terms:
-40 + 3x + 4x = 21

Combine like terms: 3x + 4x = 7x
-40 + 7x = 21

Solving
-40 + 7x = 21

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 7x = 21 + 40

Combine like terms: -40 + 40 = 0
0 + 7x = 21 + 40
7x = 21 + 40

Combine like terms: 21 + 40 = 61
7x = 61

Divide each side by '7'.
x = 8.714285714

Simplifying
x = 8.714285714

See similar equations:

| -12=4x-3(2+x) | | 17=r+n | | x^2+9*x+5=0 | | 6.32p-7=38+4.32p | | F=1/2gr | | 5(3x+13)=20 | | 12n=5n+28 | | -9=t^7 | | 2(n+7)=5n+7 | | 5(3x+13)=25 | | 14-3x+5x-2=6-x-34 | | 12n=5n+9 | | http://media.apexlearning.com/Images/200805/23/eaf4e5a8-4fb1-4fdf-84c2-549ac9db94fa.gif | | (40+2x)(30+2x)=1800 | | -3x^2-24*x+11= | | u^7=3 | | -2(c-3)=24 | | 10+5(x+13)=25 | | (5x+7)+(3x+11)=90 | | 6.32p-17=38+4.32p | | 100=u-67 | | 2y-13=-39 | | -5/2= | | 3.6x+7=13+7x | | 3x-5+15=2x+zforx | | 15c=39 | | 24=8j | | H(t)=-16t+56t+32 | | -8-N=-1 | | 4/3x2/5 | | a+9+2a=3a+9 | | 3z=9.3 |

Equations solver categories