a(n)=12+(n+-1)*3

Simple and best practice solution for a(n)=12+(n+-1)*3 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 a(n)=12+(n+-1)*3 equation: 


Simplifying
a(n) = 12 + (n + -1) * 3

Multiply a * n
an = 12 + (n + -1) * 3

Reorder the terms:
an = 12 + (-1 + n) * 3

Reorder the terms for easier multiplication:
an = 12 + 3(-1 + n)
an = 12 + (-1 * 3 + n * 3)
an = 12 + (-3 + 3n)

Combine like terms: 12 + -3 = 9
an = 9 + 3n

Solving
an = 9 + 3n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = 9n-1 + 3

Simplifying
a = 9n-1 + 3

Reorder the terms:
a = 3 + 9n-1

See similar equations:

| 25v^2-43v=0 | | 26-4x=6-x | | https://static.k12.com/bank_packages/files/media/00c45a8379f42d8a1e0acca1002c4bcc.png | | 3x-1=2x+46 | | (v+7)(5v+7)=0 | | Y(2y-2)=0 | | Y=-x-3/5 | | 25s^2-43S=0 | | 2a-3b=9 | | 30y+7=67 | | 5r-2s+18=0 | | (2+2)= | | -3a+2b=9 | | 8(6x-10)+12=16x-4+18x | | 8y-8+2(4y+4)=-2(y+2) | | 2b-3a=9 | | -6(v+8)=-8v-40 | | (x*25)+(y*15)=1 | | -30=3(w-2)-6w | | (-x^2-4)=0 | | 83.60-(-4.75)= | | 50-X=y+10 | | 7w=30+w | | 4/9÷3/9= | | 3/4(4f-12)=9 | | 4/9÷3/9 | | 4x+16=-13+4x | | 25x^2-80x+91=0 | | .4285y+18=15 | | 2x+10=-7(7x-4) | | (y/100000-100000)^4=0 | | 6=-3(x+22) |

Equations solver categories