3x+21+18=

Simple and best practice solution for 3x+21+18= 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+18= equation:


Simplifying
3x + 21 + 18 = 0

Reorder the terms:
21 + 18 + 3x = 0

Combine like terms: 21 + 18 = 39
39 + 3x = 0

Solving
39 + 3x = 0

Solving for variable 'x'.

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

Add '-39' to each side of the equation.
39 + -39 + 3x = 0 + -39

Combine like terms: 39 + -39 = 0
0 + 3x = 0 + -39
3x = 0 + -39

Combine like terms: 0 + -39 = -39
3x = -39

Divide each side by '3'.
x = -13

Simplifying
x = -13

See similar equations:

| (x+5)(2x+3)=-5 | | 225x^9+90x^5+45x^2= | | (4x+1)(2x+1)= | | 2x^2-14x-88=0 | | 2(x-2)=6 | | 6y^2+12y+13=2y+4 | | x(12x+7)=10 | | 3v+12-10v=-23-31v-5 | | 14x+9=93 | | 25x^2=49 | | a^2+9a=682 | | 90n^2+78n=0 | | (.202+x)*4x^2= | | w^2+3w=5 | | x^2+10=-17 | | 5x^2=16-16x | | 5x^2=31x+28 | | (3x-2)(4-x)-(2x-3)=7-3x | | x^2-10x+25=40 | | .75x=-69 | | 3x-15=8x | | 2x^2+32x+78=0 | | (3a+5)(2a-6)= | | 2x-17=-5 | | X(2)-8x+16=0 | | -3+x=-x+9 | | 3a(7b+6c)=0 | | 8n+5=61 | | 7x= | | -4.4=4y | | 60-6x=12x+18 | | 53-(-17)= |

Equations solver categories