a+a-9=30

Simple and best practice solution for a+a-9=30 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+a-9=30 equation: 


Simplifying
a + a + -9 = 30

Reorder the terms:
-9 + a + a = 30

Combine like terms: a + a = 2a
-9 + 2a = 30

Solving
-9 + 2a = 30

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 2a = 30 + 9

Combine like terms: -9 + 9 = 0
0 + 2a = 30 + 9
2a = 30 + 9

Combine like terms: 30 + 9 = 39
2a = 39

Divide each side by '2'.
a = 19.5

Simplifying
a = 19.5

See similar equations:

| 40+45n=12n+180 | | 2x-4=-10+x | | 6x^2+3x+9=0 | | 5x-6=8x-18 | | t+(24)=9 | | 1.8c+32c=-5 | | 5g+40=80 | | 4x-9=54-5x | | z^2-8z-3iz+13+13i=0 | | 15.52+0.07x(x+3)=16.27-0.08x | | 9x+2=42-x | | 1x-5=1x-1x(.20) | | 8x+7=7y-34 | | 6x+12=8+8x | | 2d-146-10=12 | | 2(e^2x)=5(e^3x) | | -5x+8-3x=23 | | F(x)=6*75+15 | | 9r-4=37 | | -5x+7=30 | | -4f+8=-4f-8 | | t-(-13)=7 | | 23=3/2x+2 | | 6(10x+7)-12x=-8x+6(1+9x) | | -5(-6v-4)=-130 | | 15-t=8 | | -4f+8=-4-8 | | 3(3x+1)+4y=16 | | 16-(2m+6)=4+3m-14 | | 3(x-4)-10=-1 | | X+1-8=20 | | 6f-1=27-f |

Equations solver categories