exam Maths Puzzle Numerical Ability

If the two intergers are diffrent , how do you multiply it ? im confused .

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exam Other Question

One day, the temperature at 2:00 A.M. was 43°F, and by 3:00 P.M. the temperature was 56°F. What was the hourly rate of temperature change?

Thank you!
Complete the ordered-triple solutions for each equation.

2x+y+z=2 (, -1, 3)