116=a+(a-7)+(a-13)

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Solution for 116=a+(a-7)+(a-13) equation:


Simplifying
116 = a + (a + -7) + (a + -13)

Reorder the terms:
116 = a + (-7 + a) + (a + -13)

Remove parenthesis around (-7 + a)
116 = a + -7 + a + (a + -13)

Reorder the terms:
116 = a + -7 + a + (-13 + a)

Remove parenthesis around (-13 + a)
116 = a + -7 + a + -13 + a

Reorder the terms:
116 = -7 + -13 + a + a + a

Combine like terms: -7 + -13 = -20
116 = -20 + a + a + a

Combine like terms: a + a = 2a
116 = -20 + 2a + a

Combine like terms: 2a + a = 3a
116 = -20 + 3a

Solving
116 = -20 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
116 + -3a = -20 + 3a + -3a

Combine like terms: 3a + -3a = 0
116 + -3a = -20 + 0
116 + -3a = -20

Add '-116' to each side of the equation.
116 + -116 + -3a = -20 + -116

Combine like terms: 116 + -116 = 0
0 + -3a = -20 + -116
-3a = -20 + -116

Combine like terms: -20 + -116 = -136
-3a = -136

Divide each side by '-3'.
a = 45.33333333

Simplifying
a = 45.33333333

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