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Respuesta :

Americ
x= brother's height

Multiply 2/3 by the brother's height (x). This equals the sister's 48 inch height.

2/3x= 48
divide both sides by 2/3
x= 48 ÷ 2/3
multiply by the reciprocal of 2/3
x= 48 * 3/2
x= (48*3)/2
x= 144/2
x= 72 inches, the brother's height

ANSWER: The brother is 72 inches tall.

Hope this helps! :)

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