21x+9x=90

Simple and best practice solution for 21x+9x=90 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 21x+9x=90 equation: 



21x+9x=90

We move all terms to the left:

21x+9x-(90)=0

We add all the numbers together, and all the variables

30x-90=0

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

30x=90

x=90/30

x=3

See similar equations:

| 200=30n | | 5(x9)=0 | | -4(-4v+2)-2v=2(v-2)-1 | | 6–3n=18 | | 21x=9x=90 | | 10.5x=-4.5x-2/3 | | 0.25r−0.125+0.5r=0.5+r | | 0.4x+100=0.8x+80 | | 5x−3=4x+4 | | -8x-9=-6x=5 | | 7b+40=4(-b-1) | | 3(1-n)=-3(4-4n | | 5(−2x−4)-5x+5=15 | | 2|3x-1|-8=12 | | -3(x-5)=1-x | | 25=y/5+11 | | 2x-6=9x+12-9x-6 | | 2(2x+6)=4 | | 5x-4+5x-4=8x+6 | | 4+4x=3x+8 | | -8(1+6k)=4k-8 | | 6-6(1+6a)=30-6a | | 5a+45=5a+45=  −5−5 | | 3+6x=9-2x | | -6u-6=-3(u-3) | | 6x+3=9x+219x+21 | | 50+50=6x+10 | | -4+-2x=8 | | 8v-4=-7+5v | | 3x-6(-x+9)=-162 | | X^2+(3x)^2=2500 | | 1.9=2y+9.1 |

Equations solver categories