Question

Помогите срочно по действиям

Answer 1

$((1 \frac{1}{7} - \frac{23}{49} ) \div \frac{22}{147} - (0.6 \div 3 \frac{3}{4} ) \times 2 \frac{1}{2} + 3.75 \div 1 \frac{1}{2} ) \div 2.2 = 3\\ 1) \: 1 \frac{1}{7} - \frac{23}{49} = 1 \frac{7}{49} - \frac{23}{49} = \frac{56 - 23}{49} = \frac{33}{49} \\ 2) \: \frac{33}{49} \div \frac{22}{147} = \frac{33 \times 147}{49 \times 22} = \frac{3 \times 3}{2} = \frac{9}{2} = 4 \frac{1}{2} = 4.5 \\ 3) \: 0.6 \div 3 \frac{3}{4} = \frac{3 \times 4}{5 \times 15} = \frac{4}{5 \times 5} = \frac{4}{25} \\ 4) \: \frac{4}{25} \times 2 \frac{1}{2} = \frac{4 \times 5}{25 \times 2} = \frac{2}{5} = 0.4 \\ 5) \: 3.75 \div 1 \frac{1}{2} = \frac{15 \times 2}{4 \times 3} = \frac{5}{2} = 2.5 \\ 6) \: 4.5 - 0.4 + 2.5 = 7 - 0.4 = 6.6 \\ 7) \: 6.6 \div 2.2 = 3$