=-1+5a-9(-2+5a)

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Solution for =-1+5a-9(-2+5a) equation:


Simplifying
0 = -1 + 5a + -9(-2 + 5a)
0 = -1 + 5a + (-2 * -9 + 5a * -9)
0 = -1 + 5a + (18 + -45a)

Reorder the terms:
0 = -1 + 18 + 5a + -45a

Combine like terms: -1 + 18 = 17
0 = 17 + 5a + -45a

Combine like terms: 5a + -45a = -40a
0 = 17 + -40a

Solving
0 = 17 + -40a

Solving for variable 'a'.

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

Add '40a' to each side of the equation.
0 + 40a = 17 + -40a + 40a
Remove the zero:
40a = 17 + -40a + 40a

Combine like terms: -40a + 40a = 0
40a = 17 + 0
40a = 17

Divide each side by '40'.
a = 0.425

Simplifying
a = 0.425

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