Arlenerondilla940viz Arlenerondilla940viz Math Answered 1. -8 X (-9)=2.-13 x 5=3/ 25 x (-4)=4. 12 x 6=5. -15 x (8)=6. 56 + (-7)=7. 90 +15=8. -39 = (-3)=9. -240 + 40=10. 108 +18=