(a+b)(s+t)=

Solution for (a+b)(s+t)= equation:

Simplifying
(a + b)(s + t) = 0

Multiply (a + b) * (s + t)
(a(s + t) + b(s + t)) = 0
((s * a + t * a) + b(s + t)) = 0
((as + at) + b(s + t)) = 0
(as + at + (s * b + t * b)) = 0
(as + at + (bs + bt)) = 0
(as + at + bs + bt) = 0

Solving
as + at + bs + bt = 0

Solving for variable 'a'.

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

Add '-1bs' to each side of the equation.
as + at + bs + -1bs + bt = 0 + -1bs

Combine like terms: bs + -1bs = 0
as + at + 0 + bt = 0 + -1bs
as + at + bt = 0 + -1bs
Remove the zero:
as + at + bt = -1bs

Add '-1bt' to each side of the equation.
as + at + bt + -1bt = -1bs + -1bt

Combine like terms: bt + -1bt = 0
as + at + 0 = -1bs + -1bt
as + at = -1bs + -1bt

Reorder the terms:
as + at + bs + bt = -1bs + bs + -1bt + bt

Combine like terms: -1bs + bs = 0
as + at + bs + bt = 0 + -1bt + bt
as + at + bs + bt = -1bt + bt

Combine like terms: -1bt + bt = 0
as + at + bs + bt = 0

The solution to this equation could not be determined.