Solve the following expressions:

1. [tex]\(\frac{3}{5} + \frac{4}{5}\)[/tex]

2. [tex]\(\frac{3}{5} \times \frac{7}{3}\)[/tex]

For the first expression, simplify:
[tex]\[
\frac{3}{5} + \frac{4}{5} = \frac{3 + 4}{5} = \frac{7}{5}
\][/tex]

For the second expression, simplify:
[tex]\[
\frac{3}{5} \times \frac{7}{3} = \frac{3 \times 7}{5 \times 3} = \frac{21}{15} = \frac{7}{5}
\][/tex]

Note: The provided simplification steps had errors and some incorrect steps, so they have been corrected above.



Answer :

Let's break down and solve the given problem step by step.

### Addition of Fractions

First, we have the task of adding [tex]\(\frac{3}{5}\)[/tex] and [tex]\(\frac{4}{5}\)[/tex].

1. Identify the Fractions:
- First term: [tex]\(\frac{3}{5}\)[/tex]
- Second term: [tex]\(\frac{4}{5}\)[/tex]

2. Check the Denominator:
Since both fractions have the same denominator, we can add the numerators directly.

3. Add the Numerators:
[tex]\[ 3 + 4 = 7 \][/tex]

4. Keep the Same Denominator:
[tex]\[ \frac{3}{5} + \frac{4}{5} = \frac{7}{5} \][/tex]

5. Convert the Fraction to a Decimal:
[tex]\[ \frac{7}{5} = 1.4 \][/tex]

So, the result of the addition is [tex]\(\frac{7}{5}\)[/tex] or [tex]\(1.4\)[/tex].

### Multiplication of Fractions

Next, we need to multiply [tex]\(\frac{3}{5}\)[/tex] by [tex]\(\frac{7}{3}\)[/tex].

1. Identify the Fractions:
- First fraction: [tex]\(\frac{3}{5}\)[/tex]
- Second fraction: [tex]\(\frac{7}{3}\)[/tex]

2. Multiply the Numerators:
[tex]\[ 3 \times 7 = 21 \][/tex]

3. Multiply the Denominators:
[tex]\[ 5 \times 3 = 15 \][/tex]

4. Form the Product Fraction:
[tex]\[ \frac{3}{5} \times \frac{7}{3} = \frac{21}{15} \][/tex]

5. Simplify the Fraction:
To simplify [tex]\(\frac{21}{15}\)[/tex], we can divide both the numerator and the denominator by their greatest common divisor. However, [tex]\(\frac{21}{15}\)[/tex] already simplified to its simplest form, but for easier understanding:
[tex]\[ 21 \div 3 = 7, \quad 15 \div 3 = 5 \][/tex]
Thus, [tex]\(\frac{21}{15} = \frac{7}{5}\)[/tex]

6. Convert the Fraction to a Decimal:
[tex]\[ \frac{21}{15} = 1.4 \][/tex]

So, the result of the multiplication is [tex]\(\frac{21}{15}\)[/tex] or [tex]\(1.4\)[/tex].

### Summary of Results

- The result of the addition is: [tex]\(\frac{7}{5}\)[/tex] or [tex]\(1.4\)[/tex].
- The result of the multiplication is: [tex]\(\frac{21}{15}\)[/tex] or [tex]\(1.4\)[/tex].

To summarize:
- The addition result is [tex]\(1.4\)[/tex].
- The multiplication result is [tex]\(1.4\)[/tex].
- The numerators and denominators of the intermediate results are:
- Addition: Numerator = 7, Denominator = 5
- Multiplication: Numerator = 21, Denominator = 15