4a+5a-7=20

Simple and best practice solution for 4a+5a-7=20 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 4a+5a-7=20 equation: 


Simplifying
4a + 5a + -7 = 20

Reorder the terms:
-7 + 4a + 5a = 20

Combine like terms: 4a + 5a = 9a
-7 + 9a = 20

Solving
-7 + 9a = 20

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + 9a = 20 + 7

Combine like terms: -7 + 7 = 0
0 + 9a = 20 + 7
9a = 20 + 7

Combine like terms: 20 + 7 = 27
9a = 27

Divide each side by '9'.
a = 3

Simplifying
a = 3

See similar equations:

| 4(4a+20b)= | | 7x=8x-16 | | 2(x+(x+1)+(x+2))=168 | | 16a+24b= | | Mdx+ndy=0 | | (6a^5+9a^2)+(9a^5+9a^2)= | | x+.2x+(x+.2x)=7691.56 | | 3y+8=60 | | 2(-1)=-2 | | T(x)=34000+3x | | 10m^12/5m^11 | | 8=-9+b | | 15y=11x | | 0=b^2-3b+12 | | X=8+1.5y | | x^2-20x-162=0 | | f=6+-6x-1 | | -5(x+4)-43=3-21 | | 6(0)=-8y+24 | | 8n+103=15n | | 3v+46=5(v+6) | | 6x=-8(0)+24 | | (3x-2)=5x+8 | | f(x)=3*2x-6 | | 4x^2-p-5=0 | | 0=4x^2-p-5 | | 0.2x+2=3 | | 8x-32=3x-3 | | -4y=20-12x | | -5g+6= | | (x^2-3x-17)/(x-7) | | -2=t/9-4 |

Equations solver categories