Which fractions are equivalent to -15/20 ?
choose all answers that are correct.
a. -2/3
b.9/-12
c. -12/16
d. -25/30

9/-12 is an obvious answer to eliminate as the numerator is not negative and the denominator is not positive. -15/20 simplified is -3/4, so you have to find a similar fraction. This means that D and A are eliminate and leaves you with C as the answer.

It's C and possibly B because 15=3×5 and 20=4×5 so simplifying it we get -3/4 with is equals (not equavilent (though this is revelant only in few casses such as programing)) with 3/-4. In case of C we multiply both numbers with 4.
-3×4/4×4=(-12)/16. for B we multiply by 3.
3×3/-4×3=9/-12

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )