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6 April, 17:31

3t+u=561

7b+t=906

2b+7t+5u=1758

what are t, u, and b

(give me the numbers)

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  1. 6 April, 20:06
    0
    Look, solve it first for" b "

    u=561 - 3t

    t = 906 - 7b

    So, 2b+7 (906 - 7b) + 5 (561 - 3 (906-7b) = 1758

    gain the b then substitute by the result in the second equation then gain the value of t and solve the first equation.
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