-12-a=4d-7

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Solution for -12-a=4d-7 equation:


Simplifying
-12 + -1a = 4d + -7

Reorder the terms:
-12 + -1a = -7 + 4d

Solving
-12 + -1a = -7 + 4d

Solving for variable 'a'.

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

Add '12' to each side of the equation.
-12 + 12 + -1a = -7 + 12 + 4d

Combine like terms: -12 + 12 = 0
0 + -1a = -7 + 12 + 4d
-1a = -7 + 12 + 4d

Combine like terms: -7 + 12 = 5
-1a = 5 + 4d

Divide each side by '-1'.
a = -5 + -4d

Simplifying
a = -5 + -4d

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