## AmberCat21 Group Title 1/2x=15 one year ago one year ago

1. ParthKohli Group Title

Multiply both sides by 2.

2. ParthKohli Group Title

And you're done.

3. AmberCat21 Group Title

why 2?

4. ParthKohli Group Title

OK, let's think of it this way: divide both sides by $$\large {1 \over 2}$$.

5. AmberCat21 Group Title

and what do u mean multiply?

6. ParthKohli Group Title

Multiplication... is... the... basic... thing... they... teach... you... in... multiplication... tables.

7. ParthKohli Group Title

Remember this? 2 x 1 = 2 2 x 2 = 4 2 x 3 = 6 2 x 4 = 8 2 x 5 = 10 2 x 6 = 12

8. ParthKohli Group Title

Basically, you just wanna get the $$\rm x$$ alone.

9. AmberCat21 Group Title

i'm sorry why do we multiply 2 to both sides is what i meant ;)

10. ParthKohli Group Title

Think of it this way: we must divide both sides by $$\Large {1 \over 2}$$ which just means multiplying 2. Right?

11. AmberCat21 Group Title

yes

12. AmberCat21 Group Title

we multiply x by 2?

13. ParthKohli Group Title

Both sides.

14. AmberCat21 Group Title

can u demonstrate?

15. ParthKohli Group Title

$\rm {1 \over 2}x\cdot 2 = {15 \cdot 2}$

16. AmberCat21 Group Title

17. ParthKohli Group Title

$15 \cdot 2$

18. AmberCat21 Group Title

ok..so WHAT IF 1/2x is equals to 3..and it will look like 3/2=30?

19. jazy Group Title

What do mean if (1/2)x = 3? You multiplied by 2 in order to isolate the x...to let it alone on one side. So: $x = 15 \times 2$

20. AmberCat21 Group Title

why do we multiply it with 2 then?

21. ParthKohli Group Title

As said above, we divide by one-half which is the same as multiplying 2.

22. jazy Group Title

To UNDO the (1/2)x we multiply by 2. We want to solve for x, find it's value. So we need it isolated on one side.

23. jazy Group Title

Once you multiply by 2, the (1/2) is gone.