28=7a+12a

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Solution for 28=7a+12a equation:


Simplifying
28 = 7a + 12a

Combine like terms: 7a + 12a = 19a
28 = 19a

Solving
28 = 19a

Solving for variable 'a'.

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

Add '-19a' to each side of the equation.
28 + -19a = 19a + -19a

Combine like terms: 19a + -19a = 0
28 + -19a = 0

Add '-28' to each side of the equation.
28 + -28 + -19a = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -19a = 0 + -28
-19a = 0 + -28

Combine like terms: 0 + -28 = -28
-19a = -28

Divide each side by '-19'.
a = 1.473684211

Simplifying
a = 1.473684211

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