31-6a=15-4a

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Solution for 31-6a=15-4a equation:


Simplifying
31 + -6a = 15 + -4a

Solving
31 + -6a = 15 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
31 + -6a + 4a = 15 + -4a + 4a

Combine like terms: -6a + 4a = -2a
31 + -2a = 15 + -4a + 4a

Combine like terms: -4a + 4a = 0
31 + -2a = 15 + 0
31 + -2a = 15

Add '-31' to each side of the equation.
31 + -31 + -2a = 15 + -31

Combine like terms: 31 + -31 = 0
0 + -2a = 15 + -31
-2a = 15 + -31

Combine like terms: 15 + -31 = -16
-2a = -16

Divide each side by '-2'.
a = 8

Simplifying
a = 8

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