jmc1blaster jmc1blaster

27-10-2016
Mathematics

contestada

2m/5=1/3 (2m-12).simplified

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iyssfields11 iyssfields11

27-10-2016

the correct answer is 15

Answer Link

mecca99 mecca99

27-10-2016

2m/5 = 1/3 (2m-12)
2m/5 = 2/3m -4
2m = 10/3m -20
2m - 10/3m = 20

must have common denominator:
2 - 10/3
(3/3) × 2/1 = 6/3

now continue:
6/3m - 10/3m = -20
-4/3m = 20
-4m = -60
-m = -15
m = 15

the answer is 15.

Answer Link

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