how to simplify a expressions

Mathematics
Tutor: None Selected Time limit: 1 Day

-12(4/3x-1)    the answer is -16x+12 in my math book but i dont know how to solve it 

Jan 13th, 2015

-12(4/3x-1)

open brackets by multiplying -12 with the values in the bracket

that is: -12*4/3x and -12 *-1

-16x+12

Jan 13th, 2015

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Jan 13th, 2015
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Jan 13th, 2015
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