Sarah's age is five less than twice her sister's age. sarah is fifteen years old.

which equation could you use to solve for the age of sarah's sister?

2x - 5 = 15
2(15) - 5 = x
15 = 5 - 2x
15 - 5 = 2x

2.83941151 would be the answer you're looking for! : )

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x