Question

7 - 5[(5 + 3)2 - (22 + 10)] ok now this is just plain HARD.... D; can someone show me the steps please?

Answer 1

calculate the brackets first
7 - 5(8)2 - 32
= 7 - 5*8*2 - 32
next do multiplying
=7 - 80 - 32
= -73-32
= - 105

Answer 2

no, i dont think that is right :c these r the only options;;-383
-343
-93
-243

Answer 3

a memory aid is useful for doing these type of problens
BODMAS
- brackets over divide/multiply then add/subtract

Answer 4

oh - ok i;ll recheck

Answer 5

yes ii didnt notice the square brackets outside the round ones -

Answer 6

ok
do round brackets first:
= 7 - 5[ 8 * 2 - 32]
= 7 - 5*(-16)
= 7 + 80
= 87

Answer 7

still not one of your options - another re-check!

Answer 8

radar - can you check my work plz?

Answer 9

O.K

Answer 10

I think the problem was typed in wrong. I might not do arithmetic very well, but wolfram can, and it gets 87

Answer 11

yes

Answer 12

87 here also

Answer 13

right thanks radar -
@angie - either problem was typed wrong or the options were

Answer 14

no. there is a site called "study island" and the answer was 243.

Answer 15

well there's definitely an inconsistency somewhere - the problem you gave us definitely works out to 87.
wolfram does not err - unlike us humans!!