Question

for x = 1 upon 10 ,y = -3 upon 5 , z = 7 upon 20, find the values of the expression (x-y) -z and x -(y-z).​

Answer 1

Step-by-step explanation:

given that : x = 1 , y = -3 , z = 7

4 5 20

put the given values in ( x-y) - z and x -(y-z)

[ 1 - (-3)] - 7 and 1 - (-3 - 7 )

10 5 20 10 5 20

let the LCM of 10 and 5 , 5 and 20

( 1 + 6 ) - 7 and 1 - ( -12 - 7 )

10 10 20 10 20 20

(1 + 6) - 7 and 1 - ( -12 - 7)

10 20 10 20

7 - 7 and 1 - (-19)

10 20 10 20

now we get LCM of 10 and 20 = 20

7 × 2 - 7 × 1 and 1 × 2 + 19 × 1

10×2 20×2 10 × 2 20× 1

14 - 7 and 2 + 19

20 20 20 20

14 - 7 and 2 + 19

20 20

7 and 21

20 20

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