28=35-a

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Solution for 28=35-a equation:


Simplifying
28 = 35 + -1a

Solving
28 = 35 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
28 + a = 35 + -1a + a

Combine like terms: -1a + a = 0
28 + a = 35 + 0
28 + a = 35

Add '-28' to each side of the equation.
28 + -28 + a = 35 + -28

Combine like terms: 28 + -28 = 0
0 + a = 35 + -28
a = 35 + -28

Combine like terms: 35 + -28 = 7
a = 7

Simplifying
a = 7

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