13-a+3a=5

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Solution for 13-a+3a=5 equation:


Simplifying
13 + -1a + 3a = 5

Combine like terms: -1a + 3a = 2a
13 + 2a = 5

Solving
13 + 2a = 5

Solving for variable 'a'.

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

Add '-13' to each side of the equation.
13 + -13 + 2a = 5 + -13

Combine like terms: 13 + -13 = 0
0 + 2a = 5 + -13
2a = 5 + -13

Combine like terms: 5 + -13 = -8
2a = -8

Divide each side by '2'.
a = -4

Simplifying
a = -4

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