-11.2-4(2.1+q)=-0.8

Solution for -11.2-4(2.1+q)=-0.8 equation:

Simplifying
-11.2 + -4(2.1 + q) = -0.8
-11.2 + (2.1 * -4 + q * -4) = -0.8
-11.2 + (-8.4 + -4q) = -0.8

Combine like terms: -11.2 + -8.4 = -19.6
-19.6 + -4q = -0.8

Solving
-19.6 + -4q = -0.8

Solving for variable 'q'.

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

Add '19.6' to each side of the equation.
-19.6 + 19.6 + -4q = -0.8 + 19.6

Combine like terms: -19.6 + 19.6 = 0.0
0.0 + -4q = -0.8 + 19.6
-4q = -0.8 + 19.6

Combine like terms: -0.8 + 19.6 = 18.8
-4q = 18.8

Divide each side by '-4'.
q = -4.7

Simplifying
q = -4.7