-a+4=-7

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Solution for -a+4=-7 equation: 


Simplifying
-1a + 4 = -7

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

Solving
4 + -1a = -7

Solving for variable 'a'.

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

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

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

Combine like terms: -7 + -4 = -11
-1a = -11

Divide each side by '-1'.
a = 11

Simplifying
a = 11

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