Step-by-step explanation: because when you have a number that has x as a variable, you cant add or subtract those numbers together when both numbers have different variables.

5 0

3 years ago

What is 17 equals 5y - 3

Elena L [17]

Answer:

Step-by-step explanation:

5y-3=17

5y=17+3

5y=20

y=20/5

y=4

7 0

3 years ago

Which of the following can be added without altering any of the fractions?

S_A_V [24]

Answer:

Step-by-step explanation:

$\frac{3x}{x-1}$ + $\frac{8}{x-1}$

These fractions have a common denominator and so do not require to be altered.

The numerators can be added to simplify, that is

= $\frac{3x+8}{x-1}$

The remaining fractions have different denominators and would require to be altered before they could be added.

4 0

3 years ago