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Vilka [71]
3 years ago
5

Write an equivalent expression without parentheses and combine terms if possible 7(y + 7) - 11y

Mathematics
2 answers:
Vesnalui [34]3 years ago
3 0

Answer:

  -4y +49

Step-by-step explanation:

Use the distributive property to eliminate parentheses. Then combine like terms.

  7(y +7) -11y

  = 7y +7·7 -11y

  = y(7 -11) +49

  = -4y +49

AURORKA [14]3 years ago
3 0
7(y+7)-11y
7y+49-11y

18y+49








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QUESTION A

The given multiplication problem is

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Factor each term to obtain;

\frac{13\times 3}{8\times8} \times \frac{8}{13}

Cancel out the common factors to obtain;

\frac{1\times 3}{8\times1} \times \frac{1}{1}

Simplify to get;

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QUESTION B

The given multiplication problem is

\frac{2}{3}\times \frac{1}{5}\times \frac{4}{7}

This the same as

\frac{2\times 1\times 4}{3\times 5\times 7}

This simplifies to;

\frac{8}{105}

QUESTION C

The given problem is

\frac{3}{5}\times \frac{10}{12} \times \frac{1}{2}

This is the same as

\frac{3}{5}\times \frac{5}{6} \times \frac{1}{2}

=\frac{1}{1}\times \frac{1}{2} \times \frac{1}{2}

This simplifies to

=\frac{1}{4}

QUESTION D.

The given expression is

\frac{4}{9}\times 54

Factor the 54 to obtain;

\frac{4}{9}\times 9\times 6

Cancel the common factors to get;

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QUESTION E

The given problem is

20\times 3\frac{1}{5}

Convert the mixed numbers to improper fraction to obtain;

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Cancel the common factors to get;

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11 \times 2 \frac{7}{11}

Convert the mixed numbers to improper fractions to obtain;

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Cancel out the common factors to get;

=1 \times \frac{29}{1}

Simplify;

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The given problem is

5\frac{1}{3}\times 5\frac{1}{8}

Convert to improper fractions;

=\frac{16}{3}\times \frac{41}{8}

Cancel out the common factors to get;

=\frac{2}{3}\times \frac{41}{1}

=\frac{82}{3}

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The given expression is

10\frac{2}{3} \times 1\frac{3}{8}

Convert to improper fraction to get;

\frac{32}{3} \times \frac{11}{8}

Cancel common factors to get;

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Convert back to mixed numbers;

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Answer:

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Call "a number" x.  

The opposite of x is -x.  

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