64
24 + 18 + 20 + 22 = 84
22 + 24 + 28 + 25 + 20 + 19 = 138
-24
20 + 4 = 24
If you mean 16 plus 24/6 then it is 20
20
It is the commutative property as well as the associative property. Without the second, the equality need not hold.
112
Algebra4y-4 plus y plus 24 equals 6y plus 20-4YCombine like terms5y+20=2y+20Isolate Y3y=0y=0
20 + 12 - 8 = 24
24
138