3x-(2x+4)=21

Simple and best practice solution for 3x-(2x+4)=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-(2x+4)=21 equation:


Simplifying
3x + -1(2x + 4) = 21

Reorder the terms:
3x + -1(4 + 2x) = 21
3x + (4 * -1 + 2x * -1) = 21
3x + (-4 + -2x) = 21

Reorder the terms:
-4 + 3x + -2x = 21

Combine like terms: 3x + -2x = 1x
-4 + 1x = 21

Solving
-4 + 1x = 21

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 1x = 21 + 4

Combine like terms: -4 + 4 = 0
0 + 1x = 21 + 4
1x = 21 + 4

Combine like terms: 21 + 4 = 25
1x = 25

Divide each side by '1'.
x = 25

Simplifying
x = 25

See similar equations:

| 3x+2(4x+6)=-113 | | -2x(-2x-2)+4x(-6x-3)= | | 3x+7=4-2x | | 18-2x=12+5x | | -3(5x-4)=42 | | 3(3x-3)-12x=2(2-5x) | | m-2(3m-4)=-7 | | x=-7y+24 | | -8=4x+2(-4x+14) | | y=19x-25 | | x^2+8y^2+6y-2=0 | | 3y+5-2=6y+9-y | | 2-5(a+2)=-4a-14 | | 8x+7-3x=19 | | (4c+3)(3c+4)+9(3c+8)= | | -4x+19+6x=45 | | 2+5=(n-1) | | -5+4c=-17 | | 10x+18y= | | I=(4c+3)(3c+4)+9(3c+8) | | 4+2(x+1)=22 | | 12x+1=3x+19 | | 2(x+5)+3x=82 | | 18x+9y=63 | | 2x+1=6x-2 | | 2(x+5)+x=82 | | 6c-12c= | | X^2-20x^2+64=0 | | 4e^3x+1=73 | | 2(4x+1)-(3x+6)=25 | | 6x+3x+x=550 | | -2m(m-30)=(-6m) |

Equations solver categories