Question

Marta’s math textbook weighs 4/5 of a pound less than 4 times the weight of the book she is reading for her language arts class. If the weight of the math textbook is 2 1/5 pounds, which shows the correct equation and value of x, the weight of Marta’s book for language arts?

Answer 1

The answer is $2\frac{1}{5} =4x- \frac{4}{5}$, x = 3/4 pound.

Let m be the weight of math textbook.
Let x be the weight of language arts class.
Math textbook weighs 4/5 of a pound less  than 4 times the weight of the book for language arts class:
m = 4x - 4/5

Since $m = 2 \frac{1}{5}$, then:
$2\frac{1}{5} =4x- \frac{4}{5}$
$2 + \frac{1}{5}=4x- \frac{4}{5}$
$2+ \frac{1}{5} + \frac{4}{5}=4x$
$2+ \frac{1+4}{5}=4x$
$2+ \frac{5}{5}=4x$
$2+1=4x$
$3=4x$
$x= \frac{3}{4}$

Answer 2

Answer:

c

Step-by-step explanation: