Translation:

T = B + 5

Translation:

T = C - 1

Translation:

U = 3C

Translation:

U = 4B
Put the 4 equations together and number them:

(1)   T = B + 5
(2)   T = C - 1
(3)   U = 3C
(4)   U = 4B

Solve (1) for B:  

(5)   T - 5 = B

Substitute (T - 5) for B in (4)

(6)   U = 4(T - 5)

Solve (2) for C:

(7)   T + 1 = C

Substitute (T + 1) for C in (3)

(8)   U = 3(T + 1)

Substitute 3(T + 1) for U in (6)

(9)   3(T + 1) = 4(T - 5)

Solve (9) for T

Edwin
 

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