6+-0.2(20a-5)+3a=

Solution for 6+-0.2(20a-5)+3a= equation:

Simplifying
6 + -0.2(20a + -5) + 3a = 0

Reorder the terms:
6 + -0.2(-5 + 20a) + 3a = 0
6 + (-5 * -0.2 + 20a * -0.2) + 3a = 0
6 + (1 + -4a) + 3a = 0

Combine like terms: 6 + 1 = 7
7 + -4a + 3a = 0

Combine like terms: -4a + 3a = -1a
7 + -1a = 0

Solving
7 + -1a = 0

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + -1a = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -1a = 0 + -7
-1a = 0 + -7

Combine like terms: 0 + -7 = -7
-1a = -7

Divide each side by '-1'.
a = 7

Simplifying
a = 7