12÷(-2,4 (-3,5*(-4) 0,65*4/13+1 2/3 ÷5/9 помогите у меня контрольная
12 : ( -2,4 * (-3,5 * (-4))) = 12: ( - 2,4 * 14) = 12: (-33,6) = = 12 : ( - 336/10 ) = 12/1 * ( - 10/336 ) = -10/28 = - 5/14 0,65 * 4/13 + 1 2/3 : 5/9 = 65/100 * 4/13 + 5/3 * 9/5 = = 13/20 * 4/13 + 3 = 1/5 + 3 = 3 1/5 =3,2
12:(-2,4(-3,5*(-4)=-70 1)12:(-2,4)=-120:24=-5 2)-3,5*(-4)=14 3)-5*14=-70 0,65*4/13+1 2/3:5/9=3,2 1)65/100*4/13=5/25=0,2 2)5/3*9/5=3 3)0,2+3=3,2