21.5=a-1.5

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Solution for 21.5=a-1.5 equation:


Simplifying
21.5 = a + -1.5

Reorder the terms:
21.5 = -1.5 + a

Solving
21.5 = -1.5 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
21.5 + -1a = -1.5 + a + -1a

Combine like terms: a + -1a = 0
21.5 + -1a = -1.5 + 0
21.5 + -1a = -1.5

Add '-21.5' to each side of the equation.
21.5 + -21.5 + -1a = -1.5 + -21.5

Combine like terms: 21.5 + -21.5 = 0.0
0.0 + -1a = -1.5 + -21.5
-1a = -1.5 + -21.5

Combine like terms: -1.5 + -21.5 = -23
-1a = -23

Divide each side by '-1'.
a = 23

Simplifying
a = 23

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