thatgirl666 2 years ago Solve? 4/5y+2=6

1. ash2326

$\frac 4 5 y+2=6$ Subtract both sides by 2, what would you get? $\frac 4 5 y +2- 2= 6-2$

2. thatgirl666

4/5 y= 4?

3. ash2326

Yes, good :D Now multiply both sides by 5

4. thatgirl666

how do i multiply a fraction by 5?

5. ash2326

$\frac 4 5 y= 4$ $(\frac 4 5 \times 5 ) y= 4\times 5$ $(\frac 4 {\cancel 5} \times \cancel 5 ) y= 4\times 5$ $4y=4\times 5$ Do you get this?

6. ash2326

@thatgirl666 ????

7. thatgirl666

Not really so the answer is 20?

8. thatgirl666

Nevermind. i then divide by 4 and it equals 5

9. ash2326

Yeah, let me explain you the multiplication of fractions

10. thatgirl666

Ok

11. ash2326

Suppose you have the fraction $\frac a b$ You need to multiply by a no. say c $\frac ab \times c=\frac{a\times b}c$ If you had to multiply by 1/c $\frac ab \times \frac 1 c=\frac a {b\times c}$ here $a \ne b \ne c$ Do you get this?

12. thatgirl666

Yes i do now Thank you

13. ash2326

If you multiply a/b by b, what would you get?

14. ash2326

$\frac a b \times b= ???$

15. thatgirl666

c

16. ash2326

We don't even have c in the expression $\frac 2 4 \times 4=???$

17. thatgirl666

*Question Closed*

18. ash2326

It's a simple thing, you should learn it