a+(a+19)=153

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Solution for a+(a+19)=153 equation: 


Simplifying
a + (a + 19) = 153

Reorder the terms:
a + (19 + a) = 153

Remove parenthesis around (19 + a)
a + 19 + a = 153

Reorder the terms:
19 + a + a = 153

Combine like terms: a + a = 2a
19 + 2a = 153

Solving
19 + 2a = 153

Solving for variable 'a'.

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

Add '-19' to each side of the equation.
19 + -19 + 2a = 153 + -19

Combine like terms: 19 + -19 = 0
0 + 2a = 153 + -19
2a = 153 + -19

Combine like terms: 153 + -19 = 134
2a = 134

Divide each side by '2'.
a = 67

Simplifying
a = 67

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