Решить, буду благодарна : 1) х+ 2 целых 17/20= 3 целых 1/2 2)-5 целых 1/3 * х= 56/69 3)х- 6 целых 3/20= -39/40 4)х : (-1 целая 1/2)= 13/20 5)5/8у-3/4=2у-2 целых 2/5

1)x+2(17/20)=3(1/2) x+(57/20)=(7/2) x=(7/2)-(57/20) x=(140/40)-(114/40) x=26/40 x=13/20 x=0,65 2)-5(1/3)*x=56/69 -(16/3)*x=56/69 x=-((56*3)/(69*16)) x=-(56/(23*16)) x=-(14/(23*4)) x=-(14/92) x=-(7/46) 3)x / -(1(1/2)) = 13/20 -2x/3=13/20 -2x=(13*3)/20 x=-39/40 4)(5/8)y - (3/4) = 2y - 2(2/5) (5/8)y-2y = - (12/5) + (3/4) (5/8)y-(16/8)y = - (48/20) + (15/20) -(11/8)y = - (33/20) y = (33*8)/(20*11) y = (3*4)/10 y = 12/10 y = 1,2