Answer:

Step-by-step explanation:
We are given,
.
It is required to find the value of y.
Now, on simplifying above equation, we get,

i.e. 
i.e. 
i.e. 
Hence, the missing term is
.
Answer:
43
Step-by-step explanation:
Let's call this number x. The word sum means addition, so we can write x + 21 = 64. When we subtract 21 from both sides, we get x = 43. Hope this helps!
3×(60+7)
(3×30) + (3×7)
90 + 21 = 111
Answer:
x+5=5
Step-by-step explanation:
This is an equation where you are actually solving it. The others are expressions.
Answer:
8*1+12+24*1
Step-by-step explanation: