2a-9=4a+21

Simple and best practice solution for 2a-9=4a+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 2a-9=4a+21 equation: 



2a-9=4a+21

We move all terms to the left:

2a-9-(4a+21)=0

We get rid of parentheses

2a-4a-21-9=0

We add all the numbers together, and all the variables

-2a-30=0

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

-2a=30

a=30/-2

a=-15

See similar equations:

| 2x+53+x-13+x=180 | | 3x+20=N | | 4x-10=-10+2x | | 5y-2=11y+22 | | 32+3y-11=13y-14-5y | | X+46=3m | | -35=-5/4y | | 2u/7=-4 | | 2.7x-19.51=2.9 | | 10i-2=4i+40 | | -3y=-9/5 | | 6z-3=7 | | 4(2y)-y=21 | | (0.1-2x)^2=0 | | 3a-8=4a-16 | | X-0.65x=38 | | 3a−8=4a−16 | | 3c+1=5c-19 | | 4=3(w-2)-8w | | -16/7=-8w | | 2x+5+25=180 | | 6x-4x+8=0 | | (x-2)(x+1)=180 | | 0.5(x-4)=80;20 | | 2k+6k=64.8 | | V=7191-7191x0.05x9 | | 3x^2+17=12x | | -4(n-7)=52 | | -3=y-2/5 | | 2(3x-1)+2(4x+5)=20 | | 3a÷5+2a÷5=5a | | 7y-(-12)=51 |

Equations solver categories