3+(r+1.6)-8r=9.5

Solution for 3+(r+1.6)-8r=9.5 equation:

Simplifying
3 + (r + 1.6) + -8r = 9.5

Reorder the terms:
3 + (1.6 + r) + -8r = 9.5

Remove parenthesis around (1.6 + r)
3 + 1.6 + r + -8r = 9.5

Combine like terms: 3 + 1.6 = 4.6
4.6 + r + -8r = 9.5

Combine like terms: r + -8r = -7r
4.6 + -7r = 9.5

Solving
4.6 + -7r = 9.5

Solving for variable 'r'.

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

Add '-4.6' to each side of the equation.
4.6 + -4.6 + -7r = 9.5 + -4.6

Combine like terms: 4.6 + -4.6 = 0.0
0.0 + -7r = 9.5 + -4.6
-7r = 9.5 + -4.6

Combine like terms: 9.5 + -4.6 = 4.9
-7r = 4.9

Divide each side by '-7'.
r = -0.7

Simplifying
r = -0.7