Question

(4 2/8+5 1/2)•6

(4-1 1/3•2)•1/2

6 3/5•7 1/6-2 1/6•6 3/5

3 3/4•3 3/4+3 3/4•1/2

Answer 1

Объяснение:

1.)

$(4 \frac{2}{8} + 5 \frac{1}{2}) \times 6 = (\frac{34}{8} + \frac{11}{2} ) \times 6 = \\ \\ = \frac{39}{4} \times 6 = \frac{39}{2} \times 3 = \frac{117}{2} = 58.5$

$(4 - 1 \frac{1}{3} \times 2) \times \frac{1}{2} = (4 - \frac{4}{3} \times 2) \times \frac{1}{2} = \\ \\ = (4 - \frac{8}{3} ) \times \frac{1}{2} = \frac{4}{3} \times \frac{1}{2} = \frac{4 \times 1}{3 \times 2} = \frac{4}{6} = \frac{2}{3}$

2.)

$6 \frac{3}{5} \times 7 \frac{1}{6} - 2 \frac{1}{6} \times 6 \frac{3}{5} = \\ \\ \frac{33}{5} \times \frac{43}{6} - \frac{13}{2} \times \frac{33}{5} = \frac{473}{10} - \frac{143}{10} = \frac{330}{10} = 33$

3.)

$3 \frac{3}{4} \times 3 \frac{3}{4} + 3 \frac{3}{4} \times \frac{1}{2} = \frac{15}{4} \times \frac{15}{4} + \frac{15}{4} \times \frac{1}{2} = \\ \\ = \frac{255}{16} + \frac{15}{8} = \frac{255}{16} + \frac{30}{16} = \frac{255}{16} = 15.9375$