3x-21-4x=7

Simple and best practice solution for 3x-21-4x=7 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-21-4x=7 equation:


Simplifying
3x + -21 + -4x = 7

Reorder the terms:
-21 + 3x + -4x = 7

Combine like terms: 3x + -4x = -1x
-21 + -1x = 7

Solving
-21 + -1x = 7

Solving for variable 'x'.

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

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

Combine like terms: -21 + 21 = 0
0 + -1x = 7 + 21
-1x = 7 + 21

Combine like terms: 7 + 21 = 28
-1x = 28

Divide each side by '-1'.
x = -28

Simplifying
x = -28

See similar equations:

| 2y+10=-14 | | 3x+6-3=7x+7-4x | | 12+5(2+y)= | | 48=6(-10+n) | | 48=6(-20+n) | | 13x+44=-28 | | 2x+2(5+2x)6x+10=250 | | 4x^3-100x^2-600x-1000=0 | | -6(r+8)=-66 | | 3=(y-41) | | 6(x+8)+x=3(x+2)-8 | | 59=6n+5 | | 25x^2+9y^2+150x-18y+9=0 | | ln|cos(pi/2)| | | 3x=4x-131 | | (X+51)=2 | | -5(3p+2)-16=2(2p+6) | | x-2radx=3 | | -240=h/2 | | (11x-26y)+(48x+70y)= | | 2(-k-6)+7k=k | | EV=(197/500)-(998/500) | | -6(5x+7)=222 | | 6m+7=-10 | | -2(x/1)=10x | | 5x^2-10x=22 | | 4x+8-3x+6=x+6 | | 7-6n+2n=12-69 | | (-4x-2)-(-13x+1)= | | 2/5t=12/26 | | 2=(x+51) | | -175=-5(-8x-13) |

Equations solver categories