Evaluate the expression a - b for a = 53 and b = 29

A=53 so you would substitute the variable a for 53.

53 - b

B=29 so you would substitute b for 29.

a - 29

Combining these substitutions would leave the expression:

53 - 29

which equals 24.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.