7x-9=21

Simple and best practice solution for 7x-9=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 7x-9=21 equation: 



7x-9=21

We move all terms to the left:

7x-9-(21)=0

We add all the numbers together, and all the variables

7x-30=0

We move all terms containing x to the left, all other terms to the right

7x=30

x=30/7

x=4+2/7

See similar equations:

| -2x-5=2-(-x)-(-1) | | -x+5x-10=4(x-5)-4 | | -3x=x=(6-2x) | | 56=7(2-3x)+ | | 3(3.2r-2.5)=16.6 | | 48=3/2y | | x*12^x=84 | | 15/32=45/x | | 2x(3x-15)=3.14(34*x) | | g(5)=-14 | | 1/4x-300=-50 | | 7+x=½(4x-2) | | 0.7x-1.6(x-9)=0.4(x-3) | | -4x^2+8x+36=0 | | -3+5x-7=0-20 | | v/2-9=8 | | 2x-6=302x=x= | | s-4=-26 | | −13=9r​ +8 | | 15-z=19 | | -4-12=12-4x | | x2-14x=15 | | (7x+9)=(9x-7) | | 13x+4=69 | | 12g=108 | | 4z/9+2=5 | | 2a+7=-33 | | x4-5x3+6x2=0 | | 4(x+0.3)=2.2 | | (X+1)°=(4x-56)° | | -4x+3=-2x-10 | | x/5-3/x=8x+7/40 |

Equations solver categories