4a+7(a-4)+6(a+8)=9

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Solution for 4a+7(a-4)+6(a+8)=9 equation:


Simplifying
4a + 7(a + -4) + 6(a + 8) = 9

Reorder the terms:
4a + 7(-4 + a) + 6(a + 8) = 9
4a + (-4 * 7 + a * 7) + 6(a + 8) = 9
4a + (-28 + 7a) + 6(a + 8) = 9

Reorder the terms:
4a + -28 + 7a + 6(8 + a) = 9
4a + -28 + 7a + (8 * 6 + a * 6) = 9
4a + -28 + 7a + (48 + 6a) = 9

Reorder the terms:
-28 + 48 + 4a + 7a + 6a = 9

Combine like terms: -28 + 48 = 20
20 + 4a + 7a + 6a = 9

Combine like terms: 4a + 7a = 11a
20 + 11a + 6a = 9

Combine like terms: 11a + 6a = 17a
20 + 17a = 9

Solving
20 + 17a = 9

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + 17a = 9 + -20

Combine like terms: 20 + -20 = 0
0 + 17a = 9 + -20
17a = 9 + -20

Combine like terms: 9 + -20 = -11
17a = -11

Divide each side by '17'.
a = -0.6470588235

Simplifying
a = -0.6470588235

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