Solve 91[(3.7+9)+(7+9-3]-6+2):5=

$$91 [ ( 3.7 + 9 ) + ( 7 + 9 - 3 ] - 6 + 2 ) : 5 =$$

Evaluate

$$394.94$$

Solution Steps

Add 3.7 and 9 to get 12.7.

$$\frac{91\left(12.7+7+9-3-6+2\right)}{5}$$

Add 12.7 and 7 to get 19.7.

$$\frac{91\left(19.7+9-3-6+2\right)}{5}$$

Add 19.7 and 9 to get 28.7.

$$\frac{91\left(28.7-3-6+2\right)}{5}$$

Subtract 3 from 28.7 to get 25.7.

$$\frac{91\left(25.7-6+2\right)}{5}$$

Subtract 6 from 25.7 to get 19.7.

$$\frac{91\left(19.7+2\right)}{5}$$

Add 19.7 and 2 to get 21.7.

$$\frac{91\times 21.7}{5}$$

Multiply 91 and 21.7 to get 1974.7.

$$\frac{1974.7}{5}$$

Expand \frac{1974.7}{5} by multiplying both numerator and the denominator by 10.

$$\frac{19747}{50}$$

Factor

$$\frac{13 \cdot 31 \cdot 7 ^ {2}}{2 \cdot 5 ^ {2}} = 394\frac{47}{50} = 394.94$$