## becca9898 one year ago Need help! Equation will be in the responses.

1. anonymous

whats up?

2. becca9898

$-7x+3 = \frac{ -15 }{ 2 }$

3. becca9898

I am unsure where to start :/

4. anonymous

are you solving for just x? or simplifying?

5. becca9898

Solving for x

6. anonymous

alright well this is fairly simple.. haha give me a moment?

7. becca9898

Sure! :)

8. anonymous

alright so the first we want to isolate x, right?

9. becca9898

Correct, so would we minus 3/1 ?

10. anonymous

well not 3/1 but just 3

11. becca9898

I just figured the 3/1 because we have to subtract it from the -15/2... Would we have to multiply the 3/1 by 2 to have an equal denominator?

12. anonymous

so you will get -7x=-15/2-3

13. anonymous

and yes that would be another way to do it but either way you will get the same answer if you simplify -15/2-3

14. anonymous

do you see what im trying to say? haha

15. becca9898

So if I do -15/2-3 would it just be 15?

16. anonymous

what is -15/2 ?

17. becca9898

the problem is I cannot use decimals in this equation, they want me to keep fractions. So -15/2 would just be -15/2 because it cannot be simplified.

18. anonymous

alright sorry i didnt know that

19. becca9898

After doing the math -15/2 - 3/1 should come out to -9/2, right?

20. anonymous

a negative - a negative is?

21. becca9898

a positive?

22. anonymous

it is always a negative so -15-6=-21

23. anonymous

god im getting confused haha let me type the entire problem then ill explain it alright?

24. becca9898

OK :)

25. anonymous

-7x+3=-15/2 -7x=-15/2-3/1*2 "to combine these we need the same denominator so we multiply by two" -7x=-15/2-6/2 -7x=-21/2

26. anonymous

okay haha thats as far as i got now this is where you come in... we will simplify with decimals then replace them with fractions...

27. anonymous

-21/2=-10.5 -7x=-10.5

28. anonymous

divide by -7, isolating x

29. anonymous

x=-10.5/-7

30. anonymous

you get 1.5

31. anonymous

1.5= 3/2 so x=3/2

32. becca9898

Thank you!!

33. anonymous

haha is that one of you ranswers?

34. anonymous

no..... thank you, for bearing with me lol