0.3(r+2)=-0.1(-2nd-4)

Solution for 0.3(r+2)=-0.1(-2nd-4) equation:

Simplifying
0.3(r + 2) = -0.1(-2nd + -4)

Reorder the terms:
0.3(2 + r) = -0.1(-2nd + -4)
(2 * 0.3 + r * 0.3) = -0.1(-2nd + -4)
(0.6 + 0.3r) = -0.1(-2nd + -4)

Reorder the terms:
0.6 + 0.3r = -0.1(-4 + -2dn)
0.6 + 0.3r = (-4 * -0.1 + -2dn * -0.1)
0.6 + 0.3r = (0.4 + 0.2dn)

Solving
0.6 + 0.3r = 0.4 + 0.2dn

Solving for variable 'r'.

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

Add '-0.6' to each side of the equation.
0.6 + -0.6 + 0.3r = 0.4 + -0.6 + 0.2dn

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + 0.3r = 0.4 + -0.6 + 0.2dn
0.3r = 0.4 + -0.6 + 0.2dn

Combine like terms: 0.4 + -0.6 = -0.2
0.3r = -0.2 + 0.2dn

Divide each side by '0.3'.
r = -0.6666666667 + 0.6666666667dn

Simplifying
r = -0.6666666667 + 0.6666666667dn