40=(25-a)+a+(2a+3)

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Solution for 40=(25-a)+a+(2a+3) equation:


Simplifying
40 = (25 + -1a) + a + (2a + 3)

Remove parenthesis around (25 + -1a)
40 = 25 + -1a + a + (2a + 3)

Reorder the terms:
40 = 25 + -1a + a + (3 + 2a)

Remove parenthesis around (3 + 2a)
40 = 25 + -1a + a + 3 + 2a

Reorder the terms:
40 = 25 + 3 + -1a + a + 2a

Combine like terms: 25 + 3 = 28
40 = 28 + -1a + a + 2a

Combine like terms: -1a + a = 0
40 = 28 + 0 + 2a
40 = 28 + 2a

Solving
40 = 28 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
40 + -2a = 28 + 2a + -2a

Combine like terms: 2a + -2a = 0
40 + -2a = 28 + 0
40 + -2a = 28

Add '-40' to each side of the equation.
40 + -40 + -2a = 28 + -40

Combine like terms: 40 + -40 = 0
0 + -2a = 28 + -40
-2a = 28 + -40

Combine like terms: 28 + -40 = -12
-2a = -12

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

Simplifying
a = 6

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