3x+4-1=21

Simple and best practice solution for 3x+4-1=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+4-1=21 equation: 


Simplifying
3x + 4 + -1 = 21

Reorder the terms:
4 + -1 + 3x = 21

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

Solving
3 + 3x = 21

Solving for variable 'x'.

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

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

Combine like terms: 3 + -3 = 0
0 + 3x = 21 + -3
3x = 21 + -3

Combine like terms: 21 + -3 = 18
3x = 18

Divide each side by '3'.
x = 6

Simplifying
x = 6

See similar equations:

| -5a-7b=-6 | | 4(2x+6)=-3(-3x+5) | | 4(2x+6)=-3(-3+5) | | 4r+7-5r=6 | | -9x-13=-130 | | 6=8c | | 10(3u+2)+14(5u-2)=56(2u+9) | | -5m-8m=13 | | 2(a+b)=98 | | -648=144x-24y | | t/9-t/10=.6 | | b-22=4 | | 8-3n-5n=-8 | | 5x^6-5x^4=0 | | 6=11z | | -7x+x=-12 | | 2(3x+5)-7.5(2x-1)=3(4x+1) | | 6n+.75=-.75 | | -2+3p-6p=7 | | -23x+20=23 | | -20x-24=12 | | 9t^5+3t^3+6t^2=0 | | -9x-29=16 | | 2n-6n=8 | | 3ab+6b=0 | | -.75=3-.5n | | 20-4x=36 | | 4x+4(4+4)=4 | | 2x(x-2)+5(x-2)=0 | | .25(n-24)=13 | | 15.8=16+.2n | | 22x+16=-14 |

Equations solver categories