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Evaluate 3+11 t-9u when t=9 and u=11.

Evaluate 3+11t−9u3+11t-9u when t=9t=9 and u=11u=11.

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Full solution

Q. Evaluate 3+11t−9u3+11t-9u when t=9t=9 and u=11u=11.
  1. Identify given values: Identify the given values for tt and uu. We are given that t=9t = 9 and u=11u = 11.
  2. Substitute values into expression: Substitute the given values into the expression.\newlineThe expression is 3+11t−9u3 + 11t - 9u. We substitute t=9t = 9 and u=11u = 11 into the expression.\newlineSo, it becomes 3+11(9)−9(11)3 + 11(9) - 9(11).
  3. Perform multiplication: Perform the multiplication in the expression.\newlineNow we calculate 11×911 \times 9 and 9×119 \times 11.\newline11(9)=9911(9) = 99 and 9(11)=999(11) = 99.\newlineThe expression now is 3+99−993 + 99 - 99.
  4. Perform addition and subtraction: Perform the addition and subtraction in the expression.\newlineNow we add and subtract the numbers in the expression.\newline3+99−99=3+0=33 + 99 - 99 = 3 + 0 = 3.

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