Solve 34.5+12.3*0.3+12.3*1.7+(-1)*34.5+21/3*3/7

$$34.5+12.3 \times 0.3+12.3 \times 1.7+(-1) \times 34.5+2 \frac{ 1 }{ 3 } \times \frac{ 3 }{ 7 }$$

Evaluate

$$25.6$$

Solution Steps

Multiply 12.3 and 0.3 to get 3.69.

$$34.5+3.69+12.3\times 1.7-34.5+\frac{2\times 3+1}{3}\times \frac{3}{7}$$

Add 34.5 and 3.69 to get 38.19.

$$38.19+12.3\times 1.7-34.5+\frac{2\times 3+1}{3}\times \frac{3}{7}$$

Multiply 12.3 and 1.7 to get 20.91.

$$38.19+20.91-34.5+\frac{2\times 3+1}{3}\times \frac{3}{7}$$

Add 38.19 and 20.91 to get 59.1.

$$59.1-34.5+\frac{2\times 3+1}{3}\times \frac{3}{7}$$

Subtract 34.5 from 59.1 to get 24.6.

$$24.6+\frac{2\times 3+1}{3}\times \frac{3}{7}$$

Multiply 2 and 3 to get 6.

$$24.6+\frac{6+1}{3}\times \frac{3}{7}$$

Add 6 and 1 to get 7.

$$24.6+\frac{7}{3}\times \frac{3}{7}$$

Cancel out \frac{7}{3} and its reciprocal \frac{3}{7}.

$$24.6+1$$

Add 24.6 and 1 to get 25.6.

$$25.6$$

Factor

$$\frac{2 ^ {7}}{5} = 25\frac{3}{5} = 25.6$$