(0.2g+2.1)-4.2(2g)=

Solution for (0.2g+2.1)-4.2(2g)= equation:

Simplifying
(0.2g + 2.1) + -4.2(2g) = 0

Reorder the terms:
(2.1 + 0.2g) + -4.2(2g) = 0

Remove parenthesis around (2.1 + 0.2g)
2.1 + 0.2g + -4.2(2g) = 0

Remove parenthesis around (2g)
2.1 + 0.2g + -4.2 * 2g = 0

Multiply -4.2 * 2
2.1 + 0.2g + -8.4g = 0

Combine like terms: 0.2g + -8.4g = -8.2g
2.1 + -8.2g = 0

Solving
2.1 + -8.2g = 0

Solving for variable 'g'.

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

Add '-2.1' to each side of the equation.
2.1 + -2.1 + -8.2g = 0 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + -8.2g = 0 + -2.1
-8.2g = 0 + -2.1

Combine like terms: 0 + -2.1 = -2.1
-8.2g = -2.1

Divide each side by '-8.2'.
g = 0.256097561

Simplifying
g = 0.256097561