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Rosh007
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mmm what is (11-7)z =
erniellyd28
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4
Rosh007
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yes...
11z-3-7z=9 means
(11-7)z-3 = 9
which gives
4z-3 = 9;
Now do you want to solve for z?
erniellyd28
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thats where i get stuck
erniellyd28
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3 to get 9?
erniellyd28
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sorry my message didnt sent completely
erniellyd28
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do i find a number to multiply
erniellyd28
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do i find a number to multiply 4 with and then subtract it from 3 to get 9?
Rosh007
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well let us get moving fromwher you got stuck.....
equality has a property that if you add or subtract or multiply or divide by same number on both side of equality the result won't be altered....
so.... that is
a+b =x
is same as
a+b+c= x+c
a+b-c= x-c
(a+b)*c= x*c
(a+b)/c = x/c
Rosh007
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yes you can find a number which satisfies your rlation by using above property of equality
Rosh007
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any idea how?
erniellyd28
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4 times 3 =12-3=9?
Rosh007
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How you got 4 times 3??
erniellyd28
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4z= 4(3)=12
or am i wrong
Rosh007
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yes... the method you followed is a round about way...but there is an alternate simple 100% guarntry way using the above property wanna learn it?
erniellyd28
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yes please
Rosh007
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:)
so aftr simplification of 11z-3-7z=9
we got
4z-3 = 9
now add 3 to both sides of equality ( the result will not change because of the property
a+b =x is same as a+b+c= x+c)
what you get
erniellyd28
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12
Rosh007
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please type full equation
Rosh007
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means both RHS and LHS
erniellyd28
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rhs? lhs?
Rosh007
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means RHS = Right Hand Side
LHS = Left Hand Side
of equation
erniellyd28
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im so lost im very sorry
Rosh007
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in this equation
a+b =x
a+b is LHS
x is RHS