a+(a+4)+(2a-4)=40

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Solution for a+(a+4)+(2a-4)=40 equation: 


Simplifying
a + (a + 4) + (2a + -4) = 40

Reorder the terms:
a + (4 + a) + (2a + -4) = 40

Remove parenthesis around (4 + a)
a + 4 + a + (2a + -4) = 40

Reorder the terms:
a + 4 + a + (-4 + 2a) = 40

Remove parenthesis around (-4 + 2a)
a + 4 + a + -4 + 2a = 40

Reorder the terms:
4 + -4 + a + a + 2a = 40

Combine like terms: 4 + -4 = 0
0 + a + a + 2a = 40
a + a + 2a = 40

Combine like terms: a + a = 2a
2a + 2a = 40

Combine like terms: 2a + 2a = 4a
4a = 40

Solving
4a = 40

Solving for variable 'a'.

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

Divide each side by '4'.
a = 10

Simplifying
a = 10

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