Ashleyburnett81 Ashleyburnett81

08-05-2018
Mathematics

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if 3 m equals 12 what is the value of 6(m-1)

if 3 m equals 12 what is the value of 6m1 class=

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musiclover10045 musiclover10045

08-05-2018

find m in the first equation:
3m = 12
divide both sides by 3:
m = 12/3
m = 4

now yo know m so replace m with 4 in the second equation:

6(m-1) = 6(4-1)
do the subtraction inside the parenthesis first
6(4-1) = 6(3)

now multiply 6 and 3: 6 x 3 = 18

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