What is 7×13?
19 × (7 + 3 + 9 + 2)
19 × 10 + 11
19 × 7 + 19 × 3 + 19 × 9 + 19 × 2
19 × 10 + 19 × 11
Here the product of these two numbers are 7×13=91
What is −7×−13?
What is the value of this expression 7×13