alahrichi1
FAN AND MEDAL AWARDED
Evaluate the expression, using the given value of the variable.
z ÷ 3 – 5z + 4(z – 2) when z = 12
A.
–98
B.
–96
C.
–16
D.
–14



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AravindG
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Ok use BODMAS rule and substitute x=12 in the equation

AravindG
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@alahrichi1

alahrichi1
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I did that and got 5

AravindG
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try again?

AravindG
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can u please show ur step then i can know where you are making mistake

AravindG
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@alahrichi1 ?

alahrichi1
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=12+35*12+4(122)
=12+35*12+4*10
=12+360+4*10
=12+360+40
=15100
=85

AravindG
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ok ur first step is right

AravindG
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you considered the brackets and got 10

alahrichi1
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yes..

AravindG
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and note it is z/3 not z+3 !!

alahrichi1
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OMG!!!!!!!!!!!! thanks sooo much!! thats where my mistake was!!!

AravindG
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=12/35*12+4*10
=12/35*12+40
now do division

AravindG
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yw :)

alahrichi1
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ok 1 sec

alahrichi1
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96

AravindG
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try again?

AravindG
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show me ur step after
=12/35*12+4*10
=12/35*12+40

alahrichi1
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=460+40
=96 :D

AravindG
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60+40=??

AravindG
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reply pls i gotta sleep after finishing this !!

AravindG
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@alahrichi1 .......

alahrichi1
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20

AravindG
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20+4=?

alahrichi1
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no bro, not 60+40 its 4 minus 60

AravindG
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both are same :)

AravindG
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subtraction is actually a form of addition only :)

AravindG
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whatevr way you do the answer will be same

AravindG
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460=?

AravindG
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please reply fast ?

alahrichi1
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56

AravindG
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56+40 =?

alahrichi1
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16

AravindG
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:D you done it !!!

AravindG
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if you did other way also you will get 16
see
=460+40
=420
=16

AravindG
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beauty of mathematics !!

alahrichi1
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omg dude u are a legend

AravindG
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:D thanks ..nw i can sleep :)

alahrichi1
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good nite

AravindG
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thanks hav good day/night :)

alahrichi1
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u too