4-7a=25

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Solution for 4-7a=25 equation: 


Simplifying
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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