Question

solve this problem with explanation ​

Answer 1

Step-by-step explanation:

use formula a-1 = 1/a

( 6-1 - 7-1 ) - 1 - ( 5-1 - 4-1 ) - 1

( 1/6 - 1/7 ) - 1 - ( 1/5 - 1/4 ) - 1

LCM of 6 and 7 , LCM of 5 and 4

( 7 - 6 / 42 ) - 1 - ( 4 - 5 / 20 ) - 1

1 / 42 - 1 - ( -1 / 20 )

1 - 42 / 42 + 1 / 20

- 41 / 42 + 1 / 20

- 410 + 21 / 420

- 389 / 420

answer is - 389 / 420

Answer 2

Answer:

IF C=30 THEN

30=59(F-32)

30=59F-1888

30+1888=59F

=1918=59F

F=1918/59

F=32

Step-by-step explanation: