Question

Solve the following absolute value equation. If needed, write your answer as a fraction reduced to lowest terms. Please explain your answer |y−43|−|y−35| =0

Answer 1

Explanation:

Answer 2

y = 39

Explanation:

|y−43|−|y−35| =0

add |y−35| to each side

|y−43|= |y−35|

This tells us that y must be between 35 and 43

That means |y−35| is positive so we can remove the absolute value signs

|y−43| is negative so we negate each term ( or multiply by -1)

-y+43 = y - 35

Add y to each side

y-y+43 = y+y-35

43 = 2y -35

Add 35 to each side

43+35 = 2y

78 = 2y

Divide by 2

78/2 = 2y/2

39 = y