How to add and subtract positive and negative fractions? ​

When you are adding or subtracting a negative fraction, you usually want to consider the numerator as negative. The method is just the same, except now you may need to add negative or positive numerators.

Example 1:

Find the sum.

95+(−43)

The LCM of 5 and 3 is 15 .

To add the fractions with unlike denominators, rename the fractions with a common denominator.

95=9 × 35 × 3=2715−43=−4 × 53 × 5=−2015

So,

95+(−43)=2715+(−2015)

Since the denominators are the same, add the numerators.

=27+(−20)15=715

Explanation:

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

they are both synthetic elements

explanation:

d