13=-5-13+3a

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


Simplifying
13 = -5 + -13 + 3a

Combine like terms: -5 + -13 = -18
13 = -18 + 3a

Solving
13 = -18 + 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.
13 + -3a = -18 + 3a + -3a

Combine like terms: 3a + -3a = 0
13 + -3a = -18 + 0
13 + -3a = -18

Add '-13' to each side of the equation.
13 + -13 + -3a = -18 + -13

Combine like terms: 13 + -13 = 0
0 + -3a = -18 + -13
-3a = -18 + -13

Combine like terms: -18 + -13 = -31
-3a = -31

Divide each side by '-3'.
a = 10.33333333

Simplifying
a = 10.33333333

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