Explore Westonci.ca, the leading Q&A site where experts provide accurate and helpful answers to all your questions. Experience the ease of finding quick and accurate answers to your questions from professionals on our platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

Given:
[tex]\[ x=\frac{3}{7}, \quad y=\frac{1}{3}, \quad z=3 \frac{6}{7} \][/tex]

Work out the value of [tex]\( z + x \times y \)[/tex].


Sagot :

Sure, let's solve the problem step by step:

Given the values:
[tex]\[ x = \frac{3}{7} \][/tex]
[tex]\[ y = \frac{1}{3} \][/tex]
[tex]\[ z = 3 \frac{6}{7} \][/tex]

First, let's convert the mixed number [tex]\( z \)[/tex] into an improper fraction.

The mixed number [tex]\( 3 \frac{6}{7} \)[/tex] can be converted as follows:
[tex]\[ z = 3 \frac{6}{7} = 3 + \frac{6}{7} \][/tex]

Next, we convert [tex]\( 3 \)[/tex] into a fraction with the same denominator as [tex]\( \frac{6}{7} \)[/tex]:
[tex]\[ 3 = \frac{21}{7} \][/tex]

Now, let's add these fractions:
[tex]\[ z = \frac{21}{7} + \frac{6}{7} = \frac{21 + 6}{7} = \frac{27}{7} \][/tex]

Therefore, [tex]\( z \)[/tex] in improper fraction form is:
[tex]\[ z = \frac{27}{7} \][/tex]

Now, we need to calculate [tex]\( z + x \times y \)[/tex]. First, let's find [tex]\( x \times y \)[/tex]:
[tex]\[ x \times y = \frac{3}{7} \times \frac{1}{3} \][/tex]
[tex]\[ x \times y = \frac{3 \times 1}{7 \times 3} = \frac{3}{21} = \frac{1}{7} \][/tex]

Next, we add this product to [tex]\( z \)[/tex]:
[tex]\[ z + x \times y = z + \frac{1}{7} \][/tex]

Since [tex]\( z \)[/tex] is [tex]\( \frac{27}{7} \)[/tex] and [tex]\( x \times y \)[/tex] is [tex]\( \frac{1}{7} \)[/tex], we can write:
[tex]\[ z + x \times y = \frac{27}{7} + \frac{1}{7} \][/tex]

To add these fractions, we sum their numerators:
[tex]\[ z + x \times y = \frac{27 + 1}{7} = \frac{28}{7} \][/tex]

Finally, simplify the fraction:
[tex]\[ \frac{28}{7} = 4 \][/tex]

Thus, the value of [tex]\( z + x \times y \)[/tex] is:
[tex]\[ \boxed{4} \][/tex]