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Translate the sentence into an equation.Seven times the sum of a number and 4 equals 3. Use the variable x for the unknown number.

Solution

Translate the sentence into an equation.Seven times the sum of a number and 4 equals 3. Use the variable x for the unknown number.

Solution

The number : - 3 \frac{4}{7}

Solution steps

Represent the number with

x

A.T.Q.:

7 (x + 4) = 3

Solve for

x, 7 (x + 4) = 3 : x = - \frac{25}{7}

Convert improper fractions to mixed numbers:

\frac{25}{7} = 3 \frac{4}{7}

The number : - 3 \frac{4}{7}

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