2.5a-4-7a=20.5

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Solution for 2.5a-4-7a=20.5 equation:


Simplifying
2.5a + -4 + -7a = 20.5

Reorder the terms:
-4 + 2.5a + -7a = 20.5

Combine like terms: 2.5a + -7a = -4.5a
-4 + -4.5a = 20.5

Solving
-4 + -4.5a = 20.5

Solving for variable 'a'.

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

Add '4' to each side of the equation.
-4 + 4 + -4.5a = 20.5 + 4

Combine like terms: -4 + 4 = 0
0 + -4.5a = 20.5 + 4
-4.5a = 20.5 + 4

Combine like terms: 20.5 + 4 = 24.5
-4.5a = 24.5

Divide each side by '-4.5'.
a = -5.444444444

Simplifying
a = -5.444444444

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