-5a-7(3-4a)=5a-3(1-3a)

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Solution for -5a-7(3-4a)=5a-3(1-3a) equation:


Simplifying
-5a + -7(3 + -4a) = 5a + -3(1 + -3a)
-5a + (3 * -7 + -4a * -7) = 5a + -3(1 + -3a)
-5a + (-21 + 28a) = 5a + -3(1 + -3a)

Reorder the terms:
-21 + -5a + 28a = 5a + -3(1 + -3a)

Combine like terms: -5a + 28a = 23a
-21 + 23a = 5a + -3(1 + -3a)
-21 + 23a = 5a + (1 * -3 + -3a * -3)
-21 + 23a = 5a + (-3 + 9a)

Reorder the terms:
-21 + 23a = -3 + 5a + 9a

Combine like terms: 5a + 9a = 14a
-21 + 23a = -3 + 14a

Solving
-21 + 23a = -3 + 14a

Solving for variable 'a'.

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

Add '-14a' to each side of the equation.
-21 + 23a + -14a = -3 + 14a + -14a

Combine like terms: 23a + -14a = 9a
-21 + 9a = -3 + 14a + -14a

Combine like terms: 14a + -14a = 0
-21 + 9a = -3 + 0
-21 + 9a = -3

Add '21' to each side of the equation.
-21 + 21 + 9a = -3 + 21

Combine like terms: -21 + 21 = 0
0 + 9a = -3 + 21
9a = -3 + 21

Combine like terms: -3 + 21 = 18
9a = 18

Divide each side by '9'.
a = 2

Simplifying
a = 2

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