-(-a)-(-3)=-4

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Solution for -(-a)-(-3)=-4 equation:


Simplifying
-1(-1a) + -1(-3) = -4

Remove parenthesis around (-1a)
-1 * -1a + -1(-3) = -4

Multiply -1 * -1
1a + -1(-3) = -4

Multiply -1 * -3
1a + 3 = -4

Reorder the terms:
3 + 1a = -4

Solving
3 + 1a = -4

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 1a = -4 + -3

Combine like terms: 3 + -3 = 0
0 + 1a = -4 + -3
1a = -4 + -3

Combine like terms: -4 + -3 = -7
1a = -7

Divide each side by '1'.
a = -7

Simplifying
a = -7

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