-(a+1)(4+5)=29

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Solution for -(a+1)(4+5)=29 equation:


Simplifying
-1(a + 1)(4 + 5) = 29

Reorder the terms:
-1(1 + a)(4 + 5) = 29

Combine like terms: 4 + 5 = 9
-1(1 + a)(9) = 29

Reorder the terms for easier multiplication:
-1 * 9(1 + a) = 29

Multiply -1 * 9
-9(1 + a) = 29
(1 * -9 + a * -9) = 29
(-9 + -9a) = 29

Solving
-9 + -9a = 29

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + -9a = 29 + 9

Combine like terms: -9 + 9 = 0
0 + -9a = 29 + 9
-9a = 29 + 9

Combine like terms: 29 + 9 = 38
-9a = 38

Divide each side by '-9'.
a = -4.222222222

Simplifying
a = -4.222222222

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