Solve 5*9+10*16+15*14+20*7+25*4/9+16+14+7+4

$$\frac{ 5 \times 9+10 \times 16+15 \times 14+20 \times 7+25 \times 4 }{ 9+16+14+7+4 }$$

Evaluate

$$\frac{131}{10}=13.1$$

Solution Steps

Multiply 5 and 9 to get 45. Multiply 10 and 16 to get 160. Multiply 15 and 14 to get 210. Multiply 20 and 7 to get 140. Multiply 25 and 4 to get 100.

$$\frac{45+160+210+140+100}{9+16+14+7+4}$$

Add 45 and 160 to get 205.

$$\frac{205+210+140+100}{9+16+14+7+4}$$

Add 205 and 210 to get 415.

$$\frac{415+140+100}{9+16+14+7+4}$$

Add 415 and 140 to get 555.

$$\frac{555+100}{9+16+14+7+4}$$

Add 555 and 100 to get 655.

$$\frac{655}{9+16+14+7+4}$$

Add 9 and 16 to get 25.

$$\frac{655}{25+14+7+4}$$

Add 25 and 14 to get 39.

$$\frac{655}{39+7+4}$$

Add 39 and 7 to get 46.

$$\frac{655}{46+4}$$

Add 46 and 4 to get 50.

$$\frac{655}{50}$$

Reduce the fraction \frac{655}{50} to lowest terms by extracting and canceling out 5.

$$\frac{131}{10}$$

Factor

$$\frac{131}{2 \cdot 5} = 13\frac{1}{10} = 13.1$$