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lys-0071 [83]
3 years ago
15

X and Y

Mathematics
1 answer:
Sholpan [36]3 years ago
4 0

Step-by-step explanation:

just substitute X and Y by their numerical values.

a) -5(4)+5(-1)=-25

-20-5= -25

-25= -25. true

b) 3(4)+2(-1) = 10

12 -2 =10

10=10. true

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