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

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


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

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

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

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

Combine like terms: a + a = 2a
-3 + 2a = (a + -7) + -1(a + 4)

Reorder the terms:
-3 + 2a = (-7 + a) + -1(a + 4)

Remove parenthesis around (-7 + a)
-3 + 2a = -7 + a + -1(a + 4)

Reorder the terms:
-3 + 2a = -7 + a + -1(4 + a)
-3 + 2a = -7 + a + (4 * -1 + a * -1)
-3 + 2a = -7 + a + (-4 + -1a)

Reorder the terms:
-3 + 2a = -7 + -4 + a + -1a

Combine like terms: -7 + -4 = -11
-3 + 2a = -11 + a + -1a

Combine like terms: a + -1a = 0
-3 + 2a = -11 + 0
-3 + 2a = -11

Solving
-3 + 2a = -11

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + 2a = -11 + 3

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

Combine like terms: -11 + 3 = -8
2a = -8

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

Simplifying
a = -4

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