(25a+9d)-(10a-5d)=

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Solution for (25a+9d)-(10a-5d)= equation:


Simplifying
(25a + 9d) + -1(10a + -5d) = 0

Remove parenthesis around (25a + 9d)
25a + 9d + -1(10a + -5d) = 0
25a + 9d + (10a * -1 + -5d * -1) = 0
25a + 9d + (-10a + 5d) = 0

Reorder the terms:
25a + -10a + 9d + 5d = 0

Combine like terms: 25a + -10a = 15a
15a + 9d + 5d = 0

Combine like terms: 9d + 5d = 14d
15a + 14d = 0

Solving
15a + 14d = 0

Solving for variable 'a'.

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

Add '-14d' to each side of the equation.
15a + 14d + -14d = 0 + -14d

Combine like terms: 14d + -14d = 0
15a + 0 = 0 + -14d
15a = 0 + -14d
Remove the zero:
15a = -14d

Divide each side by '15'.
a = -0.9333333333d

Simplifying
a = -0.9333333333d

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