4(a+4)+5(a+1)=

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Solution for 4(a+4)+5(a+1)= equation:


Simplifying
4(a + 4) + 5(a + 1) = 0

Reorder the terms:
4(4 + a) + 5(a + 1) = 0
(4 * 4 + a * 4) + 5(a + 1) = 0
(16 + 4a) + 5(a + 1) = 0

Reorder the terms:
16 + 4a + 5(1 + a) = 0
16 + 4a + (1 * 5 + a * 5) = 0
16 + 4a + (5 + 5a) = 0

Reorder the terms:
16 + 5 + 4a + 5a = 0

Combine like terms: 16 + 5 = 21
21 + 4a + 5a = 0

Combine like terms: 4a + 5a = 9a
21 + 9a = 0

Solving
21 + 9a = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 9a = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 9a = 0 + -21
9a = 0 + -21

Combine like terms: 0 + -21 = -21
9a = -21

Divide each side by '9'.
a = -2.333333333

Simplifying
a = -2.333333333

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