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

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Solution for 2-(a+1)(4+5)=29-4 equation: 


Simplifying
2 + -1(a + 1)(4 + 5) = 29 + -4

Reorder the terms:
2 + -1(1 + a)(4 + 5) = 29 + -4

Combine like terms: 4 + 5 = 9
2 + -1(1 + a)(9) = 29 + -4

Reorder the terms for easier multiplication:
2 + -1 * 9(1 + a) = 29 + -4

Multiply -1 * 9
2 + -9(1 + a) = 29 + -4
2 + (1 * -9 + a * -9) = 29 + -4
2 + (-9 + -9a) = 29 + -4

Combine like terms: 2 + -9 = -7
-7 + -9a = 29 + -4

Combine like terms: 29 + -4 = 25
-7 + -9a = 25

Solving
-7 + -9a = 25

Solving for variable 'a'.

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

Add '7' to each side of the equation.
-7 + 7 + -9a = 25 + 7

Combine like terms: -7 + 7 = 0
0 + -9a = 25 + 7
-9a = 25 + 7

Combine like terms: 25 + 7 = 32
-9a = 32

Divide each side by '-9'.
a = -3.555555556

Simplifying
a = -3.555555556

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