7x+15=21+3x

Simple and best practice solution for 7x+15=21+3x 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 7x+15=21+3x equation:


Simplifying
7x + 15 = 21 + 3x

Reorder the terms:
15 + 7x = 21 + 3x

Solving
15 + 7x = 21 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
15 + 7x + -3x = 21 + 3x + -3x

Combine like terms: 7x + -3x = 4x
15 + 4x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
15 + 4x = 21 + 0
15 + 4x = 21

Add '-15' to each side of the equation.
15 + -15 + 4x = 21 + -15

Combine like terms: 15 + -15 = 0
0 + 4x = 21 + -15
4x = 21 + -15

Combine like terms: 21 + -15 = 6
4x = 6

Divide each side by '4'.
x = 1.5

Simplifying
x = 1.5

See similar equations:

| 3x/2+x/2=2x | | 4x-10=25 | | 2x+1=2+x | | 4(-4+x)=5x-1/2 | | x*25+x^2=135 | | 0.12x+0.11(7000-x)=790 | | .2x=500 | | .20x=500 | | 2x-(5x-19)=7 | | 3x+53=5x-7 | | 2x-3/2=-x+9/2 | | -17b+23=-4-7b | | (3/5y)+y=8000 | | -54+-4x+49x^2=0 | | 9y-2x+4y+11x-3x= | | -10=8x+13x | | -20-(-50)-x/9 | | 98x^2-8x-108=0 | | 82-5x=7x-22 | | (V^2-16)(6v-18)=0 | | 6(6k+1)=-12(-3k+1) | | 40-.3y=.7y | | -9m-11=103 | | 7x-4=11-2x | | .50x+(.40x)=500 | | 2(n+2)=-6 | | 4X+37=12x+2 | | .50x+.40x= | | (-8x-3)(-9x-4x-17)=0 | | -0.9t^2+45t=0 | | .50x+.40x=500 | | 1/4x^2+2x=0 |

Equations solver categories