Question

Can someone please help me fix my this question?
let a = 2, b = -5, c = 7, and d = -4.
Evaluate b – a(cd + b)

Answer 1

My answer~
(cd+b)=-33
(7)(-4)+(-5)
(7)(-4)=-28
(-28)+(-5)=-33
(-5)-(2)((-33))
(2)((-33))=-6
(-5)-(-6)=1

Answer 2

What my teacher said~
incorrect (look near the end of your work)

Answer 3

@Ineedhelplz could you try to help me?

Answer 4

Ok..

Answer 5

So you'll help me?

Answer 6

Yeah! one second

Answer 7

2((7)(−4)−5)
=(2)((7)(−4)+−5)
=(2)((7)(−4))+(2)(−5)
=−56−10
=−66

Answer 8

Thats what I got...

Answer 9

when i did the problem i got -231

Answer 10

hmm where is your work?

Answer 11

@ayonnaleflore

Answer 12

@abbycross167 What was your initial equation

Answer 13

-5-2(7x4+(-5))
-7(28=(-5))
-7(33)
-231

Answer 14

That you worked of off

Answer 15

@ayonnaleflore That is incorrect...

Answer 16

b – a(cd + b)
Is this what you wanted?

Answer 17

OH!
I didn't see the B

Answer 18

Let me re-work my problem

Answer 19

and I was asking with the substituted numbers! :)

Answer 20

-5-2(7x4+9(-5))
-7(28+(-5))
-7(33)
-231
im still getting the same answer

Answer 21

−5−2((7)(−4)−5)
=61

Answer 22

It is because we all have different equations...

Answer 23

i know why im wrong......its -4
-5-2((7)(-4)-5
=61

Answer 24

Ok so The answer is just
−5−2((7)(−4)−5)
=61
?

Answer 25

hold on i just got a positive .......

Answer 26

231......

Answer 27

@Ineedhelplz could help me some more?

Answer 28

@ayonnaleflore I think you might be doing it wrong... Because my teacher didn't say that 61 was wrong, so i think the answer is 61

Answer 29

@abbycross167 i just asked my teacher and she said it was right so idk what your teacher is telling you

Answer 30

-66 is correct

Answer 31

oh... hmmm this is confusing

Answer 32

thank you everyone for helping me!! :)