Question

помните пж нужно срочно​

Answer 1

а) -0,28 • 4/7 + 5/7 : 2 6/7 = 0,09
1) -0,28 • 4/7 = -28/100 • 4/7 = -16/100
2) 5/7 : 2 6/7 = 5/7 : 20/7 = 5/7 • 7/20 = 1/4
3) -16/100 + 1/4 = -16/100 + 25/100 =
= 9/100 = 0,09

б) (-2/3)² • 2 1/4 • (-6) = -6
1) (-2/3)² = (-2/3) • (-2/3) = 4/9
2) 4/9 • 2 1/4 = 4/9 • 9/4 = 1
3) 1 • (-6) = -6