Glenn Hopkins

2022-07-25

Solve for u.
4- 7/u+4 = 1/u+1

tun1t2j

Expert

(4(u+4) - 7)/(u+4) = 1/(u+1)
(u+1)(4u+9) = u+4
4u^2 + 13u + 9 = u+4
4u^2 + 12u + 5 = 0
(2u+5)(2u+1) = 0
-> u = -1/2 or -5/2

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