8a-6.8a-7.7=-1.2

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Solution for 8a-6.8a-7.7=-1.2 equation: 


Simplifying
8a + -6.8a + -7.7 = -1.2

Reorder the terms:
-7.7 + 8a + -6.8a = -1.2

Combine like terms: 8a + -6.8a = 1.2a
-7.7 + 1.2a = -1.2

Solving
-7.7 + 1.2a = -1.2

Solving for variable 'a'.

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

Add '7.7' to each side of the equation.
-7.7 + 7.7 + 1.2a = -1.2 + 7.7

Combine like terms: -7.7 + 7.7 = 0.0
0.0 + 1.2a = -1.2 + 7.7
1.2a = -1.2 + 7.7

Combine like terms: -1.2 + 7.7 = 6.5
1.2a = 6.5

Divide each side by '1.2'.
a = 5.416666667

Simplifying
a = 5.416666667

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