3(a-1)-(3a-4)=3(2a-2)+19

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Solution for 3(a-1)-(3a-4)=3(2a-2)+19 equation:


Simplifying
3(a + -1) + -1(3a + -4) = 3(2a + -2) + 19

Reorder the terms:
3(-1 + a) + -1(3a + -4) = 3(2a + -2) + 19
(-1 * 3 + a * 3) + -1(3a + -4) = 3(2a + -2) + 19
(-3 + 3a) + -1(3a + -4) = 3(2a + -2) + 19

Reorder the terms:
-3 + 3a + -1(-4 + 3a) = 3(2a + -2) + 19
-3 + 3a + (-4 * -1 + 3a * -1) = 3(2a + -2) + 19
-3 + 3a + (4 + -3a) = 3(2a + -2) + 19

Reorder the terms:
-3 + 4 + 3a + -3a = 3(2a + -2) + 19

Combine like terms: -3 + 4 = 1
1 + 3a + -3a = 3(2a + -2) + 19

Combine like terms: 3a + -3a = 0
1 + 0 = 3(2a + -2) + 19
1 = 3(2a + -2) + 19

Reorder the terms:
1 = 3(-2 + 2a) + 19
1 = (-2 * 3 + 2a * 3) + 19
1 = (-6 + 6a) + 19

Reorder the terms:
1 = -6 + 19 + 6a

Combine like terms: -6 + 19 = 13
1 = 13 + 6a

Solving
1 = 13 + 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.
1 + -6a = 13 + 6a + -6a

Combine like terms: 6a + -6a = 0
1 + -6a = 13 + 0
1 + -6a = 13

Add '-1' to each side of the equation.
1 + -1 + -6a = 13 + -1

Combine like terms: 1 + -1 = 0
0 + -6a = 13 + -1
-6a = 13 + -1

Combine like terms: 13 + -1 = 12
-6a = 12

Divide each side by '-6'.
a = -2

Simplifying
a = -2

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