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1+[2x-3(1.8/0.2)] how to simplify

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MusicalAngel12345id
1 + [2x - 3(1.8 / 0.2 ) ]
= 1 + [ 2x - 3 * 9]
=1 + [2x - 27]
 = 1 + 2x - 27 associate property of addition
 = 1 - 27 + 2x commutative property of addition
 = -26 + 2x
 = 2x - 26
1.8=5/5+4/5=9/5

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0.2=1/5

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1.8/0.2=(9/5)/(1/5)=(9/5)*(5/1)=9

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Therefore:

1+[2x-3(1.8/0.2)]

=1+[2x-3(9)]

=1+[2x-27]

=1+2x-27

=2x-26

=2(x-13)

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