7-4a=25

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Solution for 7-4a=25 equation: 


Simplifying
7 + -4a = 25

Solving
7 + -4a = 25

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + -4a = 25 + -7

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

Combine like terms: 25 + -7 = 18
-4a = 18

Divide each side by '-4'.
a = -4.5

Simplifying
a = -4.5

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