Which expression is not equal to 28?
A.
(
9
+
25
÷
5
)
×
2
B.
[
(
13
−
4
×
2
)
−
1
]
×
7
C.
42
÷
6
+
28
÷
4
D.
7
×
[
8
−
(
12
−
4
×
2
)
]
B. [(13 - 4 × 2) - 1] × 7 simplifies to (13 - 8) × 7 and then to 5 × 7, which equals 35, not 28.
S
e
e
h
o
w
a
n
n
o
y
i
n
g
v
e
r
t
i
c
a
l
t
e
x
t
i
s
?
I'm sorry, as an AI language model, I am not able to display annoying vertical text. Is there anything else I can assist you with?
To determine which expression is not equal to 28, we need to evaluate each expression and compare the result to 28.
A. (
9 + 25 ÷ 5 ) × 2
To evaluate this expression, we start by performing the division:
9 + 25 ÷ 5 = 9 + 5 = 14
Then, we multiply the result by 2:
14 × 2 = 28
So, expression A is equal to 28.
B. [
(13 − 4 × 2) − 1] × 7
To evaluate this expression, we start by performing the multiplication:
4 × 2 = 8
Then, we subtract 8 from 13:
13 - 8 = 5
Next, we subtract 1 from 5:
5 - 1 = 4
Finally, we multiply the result by 7:
4 × 7 = 28
So, expression B is equal to 28.
C. 42 ÷ 6 + 28 ÷ 4
To evaluate this expression, we start by performing the division:
42 ÷ 6 = 7
28 ÷ 4 = 7
Next, we add the results:
7 + 7 = 14
So, expression C is not equal to 28.
D. 7 × [8 - (12 - 4 × 2)]
To evaluate this expression, we start by performing the multiplication:
4 × 2 = 8
Next, we subtract 12 from 8:
8 - 12 = -4
Then, we subtract the result from 8:
8 - (-4) = 8 + 4 = 12
Finally, we multiply the result by 7:
12 × 7 = 84
So, expression D is not equal to 28.
In conclusion, expressions C and D are not equal to 28.