Question

Please tell me which one are positive and negative

Answer 1

Negative, Positive, Negative, Positive

Explanation:

1. 18.75 + (-19)

Adding a negative is the same as subtracting. 18.75 - 19 is -0.25 so the first answer is negative.

2.
`-3 (7)/(10)` +
`3(4)/(5)`

If you convert the fraction in the second term to one with the same denominator (three and 8 10ths), you can see that since 8 tenths is more than 7 tenths, the equation will result in positive 1/10

3. 9.4 + (-
`9(3)/(5)`)

3/5 is the same as 6/10 or .60

9.6 is more than 9.4, so the negative is further from zero than the positive.

4. -7 + 7 + 1/2

-7 + 7 is zero. zero + 1/2 is positive 1/2