Question

запишите обыкновенную дробь в виде десятичной вычислите 1) 1,28×(-2 1/4)×3,5-45,92. 2)(-6 3/4)×(-10)×(1,3)+100.

Answer 1

1) 1.28×(-2 1/4)×3.5-45.92 = 1.28×(-2.25)×3.5-45.92 = -2.88×3.5-45.92 = -10.08-45.92 = -56

2) (-6 3/4)×(-10)×1.3+100 = -6.75×(-10)×1.3+100 = 67.5×1.3+100 = 87.75+100 = 187.75

Answer 2

-25,68/5,12*3,5 - 45,92= -25,68/17,92- 45,92= - 44,4