(3a-4)-(5a+7)=

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Solution for (3a-4)-(5a+7)= equation:


Simplifying
(3a + -4) + -1(5a + 7) = 0

Reorder the terms:
(-4 + 3a) + -1(5a + 7) = 0

Remove parenthesis around (-4 + 3a)
-4 + 3a + -1(5a + 7) = 0

Reorder the terms:
-4 + 3a + -1(7 + 5a) = 0
-4 + 3a + (7 * -1 + 5a * -1) = 0
-4 + 3a + (-7 + -5a) = 0

Reorder the terms:
-4 + -7 + 3a + -5a = 0

Combine like terms: -4 + -7 = -11
-11 + 3a + -5a = 0

Combine like terms: 3a + -5a = -2a
-11 + -2a = 0

Solving
-11 + -2a = 0

Solving for variable 'a'.

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

Add '11' to each side of the equation.
-11 + 11 + -2a = 0 + 11

Combine like terms: -11 + 11 = 0
0 + -2a = 0 + 11
-2a = 0 + 11

Combine like terms: 0 + 11 = 11
-2a = 11

Divide each side by '-2'.
a = -5.5

Simplifying
a = -5.5

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