Question

please answer correctly​

Answer 1

1. 20-8+36 = 48
2. 1+2-3= 0

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Answer 2

Answer:

48 AND 0

Step-by-step explanation:

x= -1 , y= -2 and z = 3

substituting the values

We have ,

(a) -20x + 4y +12z

-20(-1) + 4(-2) + 12(3)

20-8+36

12+36

48

(b) -x-y-z

-(-1)-(-2)-3

1+2-3

3-3

0

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