1+8a-8a+9=6(-1-3a)+8(a-8)

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Solution for 1+8a-8a+9=6(-1-3a)+8(a-8) equation:


Simplifying
1 + 8a + -8a + 9 = 6(-1 + -3a) + 8(a + -8)

Reorder the terms:
1 + 9 + 8a + -8a = 6(-1 + -3a) + 8(a + -8)

Combine like terms: 1 + 9 = 10
10 + 8a + -8a = 6(-1 + -3a) + 8(a + -8)

Combine like terms: 8a + -8a = 0
10 + 0 = 6(-1 + -3a) + 8(a + -8)
10 = 6(-1 + -3a) + 8(a + -8)
10 = (-1 * 6 + -3a * 6) + 8(a + -8)
10 = (-6 + -18a) + 8(a + -8)

Reorder the terms:
10 = -6 + -18a + 8(-8 + a)
10 = -6 + -18a + (-8 * 8 + a * 8)
10 = -6 + -18a + (-64 + 8a)

Reorder the terms:
10 = -6 + -64 + -18a + 8a

Combine like terms: -6 + -64 = -70
10 = -70 + -18a + 8a

Combine like terms: -18a + 8a = -10a
10 = -70 + -10a

Solving
10 = -70 + -10a

Solving for variable 'a'.

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

Add '10a' to each side of the equation.
10 + 10a = -70 + -10a + 10a

Combine like terms: -10a + 10a = 0
10 + 10a = -70 + 0
10 + 10a = -70

Add '-10' to each side of the equation.
10 + -10 + 10a = -70 + -10

Combine like terms: 10 + -10 = 0
0 + 10a = -70 + -10
10a = -70 + -10

Combine like terms: -70 + -10 = -80
10a = -80

Divide each side by '10'.
a = -8

Simplifying
a = -8

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