.60+.05(20-x)=.1(-89)

Solution for .60+.05(20-x)=.1(-89) equation:

Simplifying
0.60 + 0.05(20 + -1x) = 0.1(-89)
0.60 + (20 * 0.05 + -1x * 0.05) = 0.1(-89)
0.60 + (1 + -0.05x) = 0.1(-89)

Combine like terms: 0.60 + 1 = 1.6
1.6 + -0.05x = 0.1(-89)

Multiply 0.1 * -89
1.6 + -0.05x = -8.9

Solving
1.6 + -0.05x = -8.9

Solving for variable 'x'.

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

Add '-1.6' to each side of the equation.
1.6 + -1.6 + -0.05x = -8.9 + -1.6

Combine like terms: 1.6 + -1.6 = 0.0
0.0 + -0.05x = -8.9 + -1.6
-0.05x = -8.9 + -1.6

Combine like terms: -8.9 + -1.6 = -10.5
-0.05x = -10.5

Divide each side by '-0.05'.
x = 210

Simplifying
x = 210