28=3a+7

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Solution for 28=3a+7 equation:


Simplifying
28 = 3a + 7

Reorder the terms:
28 = 7 + 3a

Solving
28 = 7 + 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.
28 + -3a = 7 + 3a + -3a

Combine like terms: 3a + -3a = 0
28 + -3a = 7 + 0
28 + -3a = 7

Add '-28' to each side of the equation.
28 + -28 + -3a = 7 + -28

Combine like terms: 28 + -28 = 0
0 + -3a = 7 + -28
-3a = 7 + -28

Combine like terms: 7 + -28 = -21
-3a = -21

Divide each side by '-3'.
a = 7

Simplifying
a = 7

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