2(q-0.1)=3(0.3-9)

Solution for 2(q-0.1)=3(0.3-9) equation:

Simplifying
2(q + -0.1) = 3(0.3 + -9)

Reorder the terms:
2(-0.1 + q) = 3(0.3 + -9)
(-0.1 * 2 + q * 2) = 3(0.3 + -9)
(-0.2 + 2q) = 3(0.3 + -9)

Combine like terms: 0.3 + -9 = -8.7
-0.2 + 2q = 3(-8.7)

Multiply 3 * -8.7
-0.2 + 2q = -26.1

Solving
-0.2 + 2q = -26.1

Solving for variable 'q'.

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

Add '0.2' to each side of the equation.
-0.2 + 0.2 + 2q = -26.1 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + 2q = -26.1 + 0.2
2q = -26.1 + 0.2

Combine like terms: -26.1 + 0.2 = -25.9
2q = -25.9

Divide each side by '2'.
q = -12.95

Simplifying
q = -12.95