(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)

Remove parenthesis around (21 + 3x)
21 + 3x = (4x + -7)

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

Remove parenthesis around (-7 + 4x)
21 + 3x = -7 + 4x

Solving
21 + 3x = -7 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + 3x + -4x = -7 + 4x + -4x

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

Combine like terms: 4x + -4x = 0
21 + -1x = -7 + 0
21 + -1x = -7

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:

| 7.6=9.1-0.5x | | 3-2x-3-x=5-x+5 | | -3=7+y | | 14=6c | | 6x+99-y=48xy | | 4x^2-19x+29=6x+4 | | 29=3u+8 | | 4(x+1)=5[x-(2-x)] | | 6(x-0.5)=3 | | -(-7y-8z+4)= | | Y^2+4x-6y=7 | | 4x+6x=682 | | 4x-13=59 | | -6(2x-5)=3-3(5x+9) | | 0=t-17 | | 4w+9=34 | | 3x+y=-38 | | z^2-5z+(7+i)=0 | | y=f(x+3) | | 4x-y+3z=3 | | (8x-8)=8(x+2) | | 7.6=9.2 | | 6x-4z=16 | | f(x)=500x^2+500x | | 20=2u-16 | | x-1+y-2=66 | | 3D+14=10 | | (x-1)+(y-2)=66 | | 3n+4+3+8n= | | 4y-2(2y+3)=1-2(-4-y) | | 5x+10=-2x+7(X+2)-4 | | 2+15=3-3x |

Equations solver categories