-6(-7a)-(12+6a)-18=-(5-7a)+(-a)+4

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Solution for -6(-7a)-(12+6a)-18=-(5-7a)+(-a)+4 equation:


Simplifying
-6(-7a) + -1(12 + 6a) + -18 = -1(5 + -7a) + (-1a) + 4

Remove parenthesis around (-7a)
-6 * -7a + -1(12 + 6a) + -18 = -1(5 + -7a) + (-1a) + 4

Multiply -6 * -7
42a + -1(12 + 6a) + -18 = -1(5 + -7a) + (-1a) + 4
42a + (12 * -1 + 6a * -1) + -18 = -1(5 + -7a) + (-1a) + 4
42a + (-12 + -6a) + -18 = -1(5 + -7a) + (-1a) + 4

Reorder the terms:
-12 + -18 + 42a + -6a = -1(5 + -7a) + (-1a) + 4

Combine like terms: -12 + -18 = -30
-30 + 42a + -6a = -1(5 + -7a) + (-1a) + 4

Combine like terms: 42a + -6a = 36a
-30 + 36a = -1(5 + -7a) + (-1a) + 4
-30 + 36a = (5 * -1 + -7a * -1) + (-1a) + 4
-30 + 36a = (-5 + 7a) + (-1a) + 4

Reorder the terms:
-30 + 36a = -5 + 4 + 7a + (-1a)

Combine like terms: -5 + 4 = -1
-30 + 36a = -1 + 7a + (-1a)

Combine like terms: 7a + (-1a) = 6a
-30 + 36a = -1 + 6a

Solving
-30 + 36a = -1 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-30 + 36a + -6a = -1 + 6a + -6a

Combine like terms: 36a + -6a = 30a
-30 + 30a = -1 + 6a + -6a

Combine like terms: 6a + -6a = 0
-30 + 30a = -1 + 0
-30 + 30a = -1

Add '30' to each side of the equation.
-30 + 30 + 30a = -1 + 30

Combine like terms: -30 + 30 = 0
0 + 30a = -1 + 30
30a = -1 + 30

Combine like terms: -1 + 30 = 29
30a = 29

Divide each side by '30'.
a = 0.9666666667

Simplifying
a = 0.9666666667

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