21=5x+2x

Simple and best practice solution for 21=5x+2x 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 21=5x+2x equation:


Simplifying
21 = 5x + 2x

Combine like terms: 5x + 2x = 7x
21 = 7x

Solving
21 = 7x

Solving for variable 'x'.

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

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

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

Add '-21' to each side of the equation.
21 + -21 + -7x = 0 + -21

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

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

Divide each side by '-7'.
x = 3

Simplifying
x = 3

See similar equations:

| 6-1/4(8x+12)=2x | | 3n+2.6=6.8 | | 4*(c+3)=24-(24-19)+1 | | 3+1.5(2+2)=3.5z-4 | | -2x-3+7x=-13 | | 2x^2+25x+2=x^3+2x^2 | | -(4x+9)=-13 | | x^3-25x-2=0 | | 4x+2(x+7)=2(3x+5)+4 | | 2x+1/2x+2(1+x)=29 | | (2x-5)(3-x)=0 | | 2.3x+4.6=9-3.4x | | 0.65+0.3x=x-3 | | m/2+2+4m/5+2 | | 0.6x+0.3x=x-3 | | t^3-25T-2=0 | | -7/20=-7/10 | | 2(2x-1)+3(3x-5)=9x-8 | | x(2-3x)+10=2(x+5) | | 7/20=-7/10 | | 4n+-4=-24 | | -5/7=-7/10 | | -4=11+62 | | 5/7=-7/10 | | (5+x)(5-x)=4 | | 12x+4=8x+26-2 | | 4(5-x)=x | | 10x+18/6x-16 | | t^2+25t=0 | | (-x^2)+(.00000000018)-(.00000003x)=0 | | 4(x-6)=7x | | (8b^3-6+3b^4)-(b^4-7b^3-3)= |

Equations solver categories