1.6a-6.4-0.6=1.2a-21

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Solution for 1.6a-6.4-0.6=1.2a-21 equation:


Simplifying
1.6a + -6.4 + -0.6 = 1.2a + -21

Reorder the terms:
-6.4 + -0.6 + 1.6a = 1.2a + -21

Combine like terms: -6.4 + -0.6 = -7
-7 + 1.6a = 1.2a + -21

Reorder the terms:
-7 + 1.6a = -21 + 1.2a

Solving
-7 + 1.6a = -21 + 1.2a

Solving for variable 'a'.

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

Add '-1.2a' to each side of the equation.
-7 + 1.6a + -1.2a = -21 + 1.2a + -1.2a

Combine like terms: 1.6a + -1.2a = 0.4a
-7 + 0.4a = -21 + 1.2a + -1.2a

Combine like terms: 1.2a + -1.2a = 0.0
-7 + 0.4a = -21 + 0.0
-7 + 0.4a = -21

Add '7' to each side of the equation.
-7 + 7 + 0.4a = -21 + 7

Combine like terms: -7 + 7 = 0
0 + 0.4a = -21 + 7
0.4a = -21 + 7

Combine like terms: -21 + 7 = -14
0.4a = -14

Divide each side by '0.4'.
a = -35

Simplifying
a = -35

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