31=4+4a

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Solution for 31=4+4a equation:


Simplifying
31 = 4 + 4a

Solving
31 = 4 + 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 + -4a = 4 + 4a + -4a

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

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

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

Combine like terms: 4 + -31 = -27
-4a = -27

Divide each side by '-4'.
a = 6.75

Simplifying
a = 6.75

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