8+4=blank+5

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Solution for 8+4=blank+5 equation:


Simplifying
8 + 4 = blank + 5

Combine like terms: 8 + 4 = 12
12 = blank + 5

Reorder the terms:
12 = 5 + abkln

Solving
12 = 5 + abkln

Solving for variable 'a'.

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

Add '-1abkln' to each side of the equation.
12 + -1abkln = 5 + abkln + -1abkln

Combine like terms: abkln + -1abkln = 0
12 + -1abkln = 5 + 0
12 + -1abkln = 5

Add '-12' to each side of the equation.
12 + -12 + -1abkln = 5 + -12

Combine like terms: 12 + -12 = 0
0 + -1abkln = 5 + -12
-1abkln = 5 + -12

Combine like terms: 5 + -12 = -7
-1abkln = -7

Divide each side by '-1bkln'.
a = 7b-1k-1l-1n-1

Simplifying
a = 7b-1k-1l-1n-1

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