Question

ДАЮ 80 БАЛОВ! а). 7,4•(-6,3) б). -3,8•(-4,5) в) -12/35•5/6 г) -6 3/7•1 5/9 д) -24,84:(-1,2) е) 4 1/6:(-3 1/3)(-14,2-(-3,22)):(-0,8)+(-6)•(-0,7)=а). 9,14x=-13,71 б) -5,781:x=-2,82 в). x/-22=2,9/-2,8

Answer 1

Ответ:

а)-46,62

б) 17,1

в) -2/7

г) -10

д) 20,7

е) -13 8/9

25,975

а)х=1,5

б)х=2,05

Answer 2

а) 7,4 • (-6,3) = -46,62 б) -3,8 • (-4,5) = 17,1 в) -12/35 • 5/6 = -1/7 г) -6 3/7 • 1 5/9 = -56 8/63 д) -24,84 / (-1,2) = 20,7 е) 4 1/6 : (-3 1/3) • (-14,2 - (-3,22)) : (-0,8) + (-6) • (-0,7) = -20

а) 9,14x = -13,71 To solve for x, divide both sides of the equation by 9.14: x = -13,71 / 9,14 ≈ -1,5

б) -5,781 / x = -2,82 To solve for x, multiply both sides of the equation by x: -5,781 = -2,82x Divide both sides of the equation by -2.82: x = -5,781 / -2,82 ≈ 2,05

в) x / -22 = 2,9 / -2,8 To solve for x, multiply both sides of the equation by -22: x = (2,9 / -2,8) • -22 ≈ -22,82