Question

20÷9+3×8+(6÷7+2)-3.1​

Answer 1

This is the answer:

25.9793650794

Answer 2

$20 \div 9+3 \times 8+(6 \div 7+2)-3.1 \\ = \frac{20}{9}+24+\frac{6}{7}+2-3.1 \\ = \frac{20}{9}+\frac{216}{9}+\frac{6}{7}+2-3.1 \\ = \frac{20+216}{9}+\frac{6}{7}+2-3.1 \\ = \frac{236}{9}+\frac{6}{7}+2-3.1 \\ = \frac{1652}{63}+\frac{54}{63}+2-3.1 \\ = \frac{1652+54}{63}+2-3.1 \\ = \frac{1706}{63}+2-3.1 \\ = \frac{1706}{63}+\frac{126}{63}-3.1 \\ = \frac{1832}{63}-3.1 \\ = \frac{1832}{63}-\frac{31}{10} \\ = \frac{18320}{630}-\frac{1953}{630} \\ = \frac{18320-1953}{630} \\ = \frac{16367}{630} \\ \\ \\ \\ factor \\ \frac{13 \cdot 1259}{2 \cdot 5 \cdot 7 \cdot 3 ^ {2}} = 25\frac{617}{630} \approx 25.979365079$