Solve (7+5-9)4 9 10 (99-100)\$4-4? | Equatix

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Question

$$(7+5-9)4\frac{9}{10}(99-100)\$4-4?$$

Evaluate

$-\frac{6929}{5}=-1385.8$

Solution Steps

Add $7$ and $5$ to get $12$.

$$\left(12-9\right)\times \frac{4\times 10+9}{10}\left(99-100\right)\times 94-4$$

Subtract $9$ from $12$ to get $3$.

$$3\times \frac{4\times 10+9}{10}\left(99-100\right)\times 94-4$$

Multiply $4$ and $10$ to get $40$.

$$3\times \frac{40+9}{10}\left(99-100\right)\times 94-4$$

Add $40$ and $9$ to get $49$.

$$3\times \frac{49}{10}\left(99-100\right)\times 94-4$$

Express $3\times \frac{49}{10}$ as a single fraction.

$$\frac{3\times 49}{10}\left(99-100\right)\times 94-4$$

Multiply $3$ and $49$ to get $147$.

$$\frac{147}{10}\left(99-100\right)\times 94-4$$

Subtract $100$ from $99$ to get $-1$.

$$\frac{147}{10}\left(-1\right)\times 94-4$$

Multiply $\frac{147}{10}$ and $-1$ to get $-\frac{147}{10}$.

$$-\frac{147}{10}\times 94-4$$

Express $-\frac{147}{10}\times 94$ as a single fraction.

$$\frac{-147\times 94}{10}-4$$

Multiply $-147$ and $94$ to get $-13818$.

$$\frac{-13818}{10}-4$$

Reduce the fraction $\frac{-13818}{10}$ to lowest terms by extracting and canceling out $2$.

$$-\frac{6909}{5}-4$$

Convert $4$ to fraction $\frac{20}{5}$.

$$-\frac{6909}{5}-\frac{20}{5}$$

Since $-\frac{6909}{5}$ and $\frac{20}{5}$ have the same denominator, subtract them by subtracting their numerators.

$$\frac{-6909-20}{5}$$

Subtract $20$ from $-6909$ to get $-6929$.

$$-\frac{6929}{5}$$

Show Solution

Factor

$-\frac{6929}{5} = -1385\frac{4}{5} = -1385.8$