Question

Please help quick with this question.

Answer 1

b =
`(S-2la)/(h+l)`

Explanation:

S = bh + lb + 2la ( reversing the equation )

bh + lb + 2la = S ( subtract 2la from both sides )

bh + lb = S - 2la ← factor out b from each term on the left side

b(h + l) = S - 2la ← divide both sides by (h + l)

b =
`(S-2la)/(h+l)`