.09x-.3(x+4)=-.15

Solution for .09x-.3(x+4)=-.15 equation:

Simplifying
0.09x + -0.3(x + 4) = -0.15

Reorder the terms:
0.09x + -0.3(4 + x) = -0.15
0.09x + (4 * -0.3 + x * -0.3) = -0.15
0.09x + (-1.2 + -0.3x) = -0.15

Reorder the terms:
-1.2 + 0.09x + -0.3x = -0.15

Combine like terms: 0.09x + -0.3x = -0.21x
-1.2 + -0.21x = -0.15

Solving
-1.2 + -0.21x = -0.15

Solving for variable 'x'.

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

Add '1.2' to each side of the equation.
-1.2 + 1.2 + -0.21x = -0.15 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + -0.21x = -0.15 + 1.2
-0.21x = -0.15 + 1.2

Combine like terms: -0.15 + 1.2 = 1.05
-0.21x = 1.05

Divide each side by '-0.21'.
x = -5

Simplifying
x = -5