GB-06-01-001 · Substitution with negatives

Work out $8p+6q$ when $p=9$ and $q=-6$ .

Substitution with Negative Numbers Booklet p. 30 & p. 78

Method

1) Replace each letter with its given value inside brackets ( )

2) Multiply first, watching negative signs, then add/subtract

Worked Example (GB-06-01-001)

8(9)+6(-6)

36

Ans =

36