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Mathematics 11 Online
OpenStudy (anonymous):

Solve 0.9x+6<1.3x-9

myininaya (myininaya):

try subtracting 0.9x on both sides

myininaya (myininaya):

giving you 6<1.3x-0.9x-9

myininaya (myininaya):

add 9 to both sides

myininaya (myininaya):

9+6<1.3x-0.9x

myininaya (myininaya):

15<.4x

myininaya (myininaya):

15/.4<x

myininaya (myininaya):

or x>15/.4

myininaya (myininaya):

.4=4/10 so 15/(4/10)=15 dividedby 4/10=15*10/4= 15*5/2=75/2

myininaya (myininaya):

so x>75/2

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