One fourth of the opposite of the difference of five and a number is less than twenty.

'of' means multiply

1/4 of (1/4 times ) the opposite of (-) difference of 5 and a number (5-n) is lesss than 20 (<20)

1/4 times -(5-n)<20

multiply both sides by 1/4

-(5-n)<5

multiply both sides by -1 remember to flip sign

5-n>-5

add n

5>n-5

add 5

10>n

n<10

the number is any number less than 10

b.) divide by -5.

step-by-step explanation:

x= 149. 24+7=31. 180-31=149

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