(R+3)(r+1)=0

Solution for (R+3)(r+1)=0 equation:

Simplifying
(R + 3)(r + 1) = 0

Reorder the terms:
(3 + R)(r + 1) = 0

Reorder the terms:
(3 + R)(1 + r) = 0

Multiply (3 + R) * (1 + r)
(3(1 + r) + R(1 + r)) = 0
((1 * 3 + r * 3) + R(1 + r)) = 0
((3 + 3r) + R(1 + r)) = 0
(3 + 3r + (1 * R + r * R)) = 0
(3 + 3r + (1R + rR)) = 0

Reorder the terms:
(3 + 1R + 3r + rR) = 0
(3 + 1R + 3r + rR) = 0

Solving
3 + 1R + 3r + rR = 0

Solving for variable 'R'.

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

Add '-3' to each side of the equation.
3 + 1R + 3r + -3 + rR = 0 + -3

Reorder the terms:
3 + -3 + 1R + 3r + rR = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 1R + 3r + rR = 0 + -3
1R + 3r + rR = 0 + -3

Combine like terms: 0 + -3 = -3
1R + 3r + rR = -3

Add '-3r' to each side of the equation.
1R + 3r + -3r + rR = -3 + -3r

Combine like terms: 3r + -3r = 0
1R + 0 + rR = -3 + -3r
1R + rR = -3 + -3r

Reorder the terms:
3 + 1R + 3r + rR = -3 + -3r + 3 + 3r

Reorder the terms:
3 + 1R + 3r + rR = -3 + 3 + -3r + 3r

Combine like terms: -3 + 3 = 0
3 + 1R + 3r + rR = 0 + -3r + 3r
3 + 1R + 3r + rR = -3r + 3r

Combine like terms: -3r + 3r = 0
3 + 1R + 3r + rR = 0

The solution to this equation could not be determined.