7(a+9)=3[a-(4-a)]

Simple and best practice solution for 7(a+9)=3[a-(4-a)] 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)=3[a-(4-a)] equation:


Simplifying
7(a + 9) = 3[a + -1(4 + -1a)]

Reorder the terms:
7(9 + a) = 3[a + -1(4 + -1a)]
(9 * 7 + a * 7) = 3[a + -1(4 + -1a)]
(63 + 7a) = 3[a + -1(4 + -1a)]
63 + 7a = 3[a + (4 * -1 + -1a * -1)]
63 + 7a = 3[a + (-4 + 1a)]

Reorder the terms:
63 + 7a = 3[-4 + a + 1a]

Combine like terms: a + 1a = 2a
63 + 7a = 3[-4 + 2a]
63 + 7a = [-4 * 3 + 2a * 3]
63 + 7a = [-12 + 6a]

Solving
63 + 7a = -12 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
63 + 7a + -6a = -12 + 6a + -6a

Combine like terms: 7a + -6a = 1a
63 + 1a = -12 + 6a + -6a

Combine like terms: 6a + -6a = 0
63 + 1a = -12 + 0
63 + 1a = -12

Add '-63' to each side of the equation.
63 + -63 + 1a = -12 + -63

Combine like terms: 63 + -63 = 0
0 + 1a = -12 + -63
1a = -12 + -63

Combine like terms: -12 + -63 = -75
1a = -75

Divide each side by '1'.
a = -75

Simplifying
a = -75

See similar equations:

| -3(1-2x)=-35+2x | | (n-3/4)+(n+5/7)=(5/14) | | 2(x+4)-=2x+3 | | 5-20x=0 | | 15=-5(8x-7)+5(-4+3x) | | 18x^2-2y^4=0 | | -3.8+4.6+1.6x+7=x+3.9 | | 3x-8=x-2 | | 5x-20+x=70 | | 3x-7x+15+6x=41 | | x-6(x-1)=7(3+x) | | 0.6(15d+20)-6(18d-12)=38 | | -3.5+4.6+1.6x+7=x-3.9 | | -12=z-3 | | -2x+2+6=-3 | | 5.3=-6+x | | -2(-c-20)=-2c-20 | | 6(7x-2)=72 | | 56=8-8(1+7v) | | 6m+6=30 | | 1.5(6c-18)+0.75(8c+32)=78 | | 3x+16=100 | | =x^3-4x^2-25x+100 | | 2c+6c=81 | | -14+3a=10a | | 4x-9=28x+9 | | 4m+3m=42 | | 3(2x-14)=6(x-2) | | 8-2s-3-s=-4+18 | | 17*5=x | | 29+15x=-x-3 | | 65=5-8x+2x |

Equations solver categories