-7a-4=-25

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Solution for -7a-4=-25 equation: 


Simplifying
-7a + -4 = -25

Reorder the terms:
-4 + -7a = -25

Solving
-4 + -7a = -25

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 + -7a = -25 + 4

Combine like terms: -4 + 4 = 0
0 + -7a = -25 + 4
-7a = -25 + 4

Combine like terms: -25 + 4 = -21
-7a = -21

Divide each side by '-7'.
a = 3

Simplifying
a = 3

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