(7a-15)=(9a+25)

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Solution for (7a-15)=(9a+25) equation:


Simplifying
(7a + -15) = (9a + 25)

Reorder the terms:
(-15 + 7a) = (9a + 25)

Remove parenthesis around (-15 + 7a)
-15 + 7a = (9a + 25)

Reorder the terms:
-15 + 7a = (25 + 9a)

Remove parenthesis around (25 + 9a)
-15 + 7a = 25 + 9a

Solving
-15 + 7a = 25 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-15 + 7a + -9a = 25 + 9a + -9a

Combine like terms: 7a + -9a = -2a
-15 + -2a = 25 + 9a + -9a

Combine like terms: 9a + -9a = 0
-15 + -2a = 25 + 0
-15 + -2a = 25

Add '15' to each side of the equation.
-15 + 15 + -2a = 25 + 15

Combine like terms: -15 + 15 = 0
0 + -2a = 25 + 15
-2a = 25 + 15

Combine like terms: 25 + 15 = 40
-2a = 40

Divide each side by '-2'.
a = -20

Simplifying
a = -20

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