19=5-2a

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Solution for 19=5-2a equation:


Simplifying
19 = 5 + -2a

Solving
19 = 5 + -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.
19 + 2a = 5 + -2a + 2a

Combine like terms: -2a + 2a = 0
19 + 2a = 5 + 0
19 + 2a = 5

Add '-19' to each side of the equation.
19 + -19 + 2a = 5 + -19

Combine like terms: 19 + -19 = 0
0 + 2a = 5 + -19
2a = 5 + -19

Combine like terms: 5 + -19 = -14
2a = -14

Divide each side by '2'.
a = -7

Simplifying
a = -7

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