3a+9+4a=15

Simple and best practice solution for 3a+9+4a=15 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 3a+9+4a=15 equation:


Simplifying
3a + 9 + 4a = 15

Reorder the terms:
9 + 3a + 4a = 15

Combine like terms: 3a + 4a = 7a
9 + 7a = 15

Solving
9 + 7a = 15

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 + 7a = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 7a = 15 + -9
7a = 15 + -9

Combine like terms: 15 + -9 = 6
7a = 6

Divide each side by '7'.
a = 0.8571428571

Simplifying
a = 0.8571428571

See similar equations:

| 8c+d-15c+5d= | | -2a+4+3a=11-22 | | 4(q+3)= | | t^2-4t=0 | | t^2-4=0 | | -840=-20(-6b) | | -47+13y+8=5(3y-5)-6 | | 2-2=7z-5z | | y-18=0 | | 3x^2+8x+5=0 | | -x^2+3x-2.25=0 | | (x-5)(4x+7)=0 | | 4t-13t=63 | | -s=8 | | 8x^3-1=0 | | 7x+4=x+16 | | 0=9(y+2) | | 2c-7=38 | | -3+8=5b-4-4b | | 17x^2-18x=0 | | 19x^2-16x=0 | | 3*x-31=3+x | | 110-98=40y-44y | | 3*x-31=3 | | 2*x-4=14 | | 15x^2=20-5x | | 42s^2-17s=15 | | 6(x-4)+3(x+7)=7 | | -11=11(h-4) | | -5(2p+4)-44=2(3p+8) | | 9=s+13 | | 10x=5x+10 |

Equations solver categories