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Grade 7 math · N.11 · Simplify expressions

Evaluate linear expressions with positive values

Replace each letter with its value. Put parentheses around negative values.

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See worked examples
  1. Evaluate −5x + 4 when x = 9.

    Answer: -41

  2. Evaluate 2x − 1 when x = 7.

    Answer: 13

  3. Evaluate x + 1 when x = 1.

    Answer: 2

Tip: Replace each letter with its value. Put parentheses around negative values.

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