Respuesta :
set up an equation with x as the variable for the missing number
(28+32+21+22+x)/5 = 24.4
multiply both sides by 5
28+32+21+22+x = 5(24.4)
simplify (add and multiply)
103+x = 122
subtract 103 from both sides
x = 122-103
simplify
x = 19
(28+32+21+22+x)/5 = 24.4
multiply both sides by 5
28+32+21+22+x = 5(24.4)
simplify (add and multiply)
103+x = 122
subtract 103 from both sides
x = 122-103
simplify
x = 19
