25-3a=9(8a-7)

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Solution for 25-3a=9(8a-7) equation:


Simplifying
25 + -3a = 9(8a + -7)

Reorder the terms:
25 + -3a = 9(-7 + 8a)
25 + -3a = (-7 * 9 + 8a * 9)
25 + -3a = (-63 + 72a)

Solving
25 + -3a = -63 + 72a

Solving for variable 'a'.

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

Add '-72a' to each side of the equation.
25 + -3a + -72a = -63 + 72a + -72a

Combine like terms: -3a + -72a = -75a
25 + -75a = -63 + 72a + -72a

Combine like terms: 72a + -72a = 0
25 + -75a = -63 + 0
25 + -75a = -63

Add '-25' to each side of the equation.
25 + -25 + -75a = -63 + -25

Combine like terms: 25 + -25 = 0
0 + -75a = -63 + -25
-75a = -63 + -25

Combine like terms: -63 + -25 = -88
-75a = -88

Divide each side by '-75'.
a = 1.173333333

Simplifying
a = 1.173333333

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