10-3(9-1)=1+a

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Solution for 10-3(9-1)=1+a equation: 


Simplifying
10 + -3(9 + -1) = 1 + a

Combine like terms: 9 + -1 = 8
10 + -3(8) = 1 + a

Multiply -3 * 8
10 + -24 = 1 + a

Combine like terms: 10 + -24 = -14
-14 = 1 + a

Solving
-14 = 1 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-14 + -1a = 1 + a + -1a

Combine like terms: a + -1a = 0
-14 + -1a = 1 + 0
-14 + -1a = 1

Add '14' to each side of the equation.
-14 + 14 + -1a = 1 + 14

Combine like terms: -14 + 14 = 0
0 + -1a = 1 + 14
-1a = 1 + 14

Combine like terms: 1 + 14 = 15
-1a = 15

Divide each side by '-1'.
a = -15

Simplifying
a = -15

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