-21a+38a-6=-10.2

Solution for -21a+38a-6=-10.2 equation:

Simplifying
-21a + 38a + -6 = -10.2

Reorder the terms:
-6 + -21a + 38a = -10.2

Combine like terms: -21a + 38a = 17a
-6 + 17a = -10.2

Solving
-6 + 17a = -10.2

Solving for variable 'a'.

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

Add '6' to each side of the equation.
-6 + 6 + 17a = -10.2 + 6

Combine like terms: -6 + 6 = 0
0 + 17a = -10.2 + 6
17a = -10.2 + 6

Combine like terms: -10.2 + 6 = -4.2
17a = -4.2

Divide each side by '17'.
a = -0.2470588235

Simplifying
a = -0.2470588235