-2a-(1+6a)=-9-4a

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Solution for -2a-(1+6a)=-9-4a equation:


Simplifying
-2a + -1(1 + 6a) = -9 + -4a
-2a + (1 * -1 + 6a * -1) = -9 + -4a
-2a + (-1 + -6a) = -9 + -4a

Reorder the terms:
-1 + -2a + -6a = -9 + -4a

Combine like terms: -2a + -6a = -8a
-1 + -8a = -9 + -4a

Solving
-1 + -8a = -9 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
-1 + -8a + 4a = -9 + -4a + 4a

Combine like terms: -8a + 4a = -4a
-1 + -4a = -9 + -4a + 4a

Combine like terms: -4a + 4a = 0
-1 + -4a = -9 + 0
-1 + -4a = -9

Add '1' to each side of the equation.
-1 + 1 + -4a = -9 + 1

Combine like terms: -1 + 1 = 0
0 + -4a = -9 + 1
-4a = -9 + 1

Combine like terms: -9 + 1 = -8
-4a = -8

Divide each side by '-4'.
a = 2

Simplifying
a = 2

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