2.5a-7=12.85a-2

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Solution for 2.5a-7=12.85a-2 equation:


Simplifying
2.5a + -7 = 12.85a + -2

Reorder the terms:
-7 + 2.5a = 12.85a + -2

Reorder the terms:
-7 + 2.5a = -2 + 12.85a

Solving
-7 + 2.5a = -2 + 12.85a

Solving for variable 'a'.

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

Add '-12.85a' to each side of the equation.
-7 + 2.5a + -12.85a = -2 + 12.85a + -12.85a

Combine like terms: 2.5a + -12.85a = -10.35a
-7 + -10.35a = -2 + 12.85a + -12.85a

Combine like terms: 12.85a + -12.85a = 0.00
-7 + -10.35a = -2 + 0.00
-7 + -10.35a = -2

Add '7' to each side of the equation.
-7 + 7 + -10.35a = -2 + 7

Combine like terms: -7 + 7 = 0
0 + -10.35a = -2 + 7
-10.35a = -2 + 7

Combine like terms: -2 + 7 = 5
-10.35a = 5

Divide each side by '-10.35'.
a = -0.4830917874

Simplifying
a = -0.4830917874

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