7(a+9)=91

Simple and best practice solution for 7(a+9)=91 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 7(a+9)=91 equation: 


Simplifying
7(a + 9) = 91

Reorder the terms:
7(9 + a) = 91
(9 * 7 + a * 7) = 91
(63 + 7a) = 91

Solving
63 + 7a = 91

Solving for variable 'a'.

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

Add '-63' to each side of the equation.
63 + -63 + 7a = 91 + -63

Combine like terms: 63 + -63 = 0
0 + 7a = 91 + -63
7a = 91 + -63

Combine like terms: 91 + -63 = 28
7a = 28

Divide each side by '7'.
a = 4

Simplifying
a = 4

See similar equations:

| n9=54/81 | | ln(x+3)-ln(19)=ln(13) | | (-8)-14(y-3)=(-2y)-(y-5) | | 4n+9=57 | | -8-14(y-3)=-2y-(y-5) | | (2a-3b+6c)(2a-3b+6c)= | | 78-12n=30 | | 3v-3=81 | | 5y^2-33y-54=0 | | 5N-20=120 | | x^3-3x^2-6x+7=0 | | 12b-(b-1)=6-4b | | -8(y-3)-14=-2xy-(y-5) | | 1.5x+0.5y+0.25z=20 | | 4r-5=-45 | | 2q-3=-21 | | 8x-12+x=6x-9 | | 4(3x+5)=3(5x-1) | | z=3x+7y+4 | | 18x+12=2x | | 2/9^2 | | t/111=147/63 | | x=7n+1 | | 8(y+10)-y=10 | | 4x+3t=2 | | X=.3log | | 4x+3t=25 | | x*10/1000=1.5 | | 7(x+10)+9=100 | | 9+2(16-7M)= | | 144x^2+144y^2+72x+192y+37=0 | | 16=6+y |

Equations solver categories