3,12×0.9÷(-0,9)-3,12÷(-0,4)×0.4 по действиям)

Question

3,12×0.9÷(-0,9)-3,12÷(-0,4)×0.4
по действиям)

Answer 1

1) 3,12*0,9=2,808 2) 2,808:(-0,9)=(-3,12) 3) (-3,12):(-0,4)=(-7,8) 4) 7,8*0,4=3,12. 5) (-3,12)+3,12=0

Answer 2

3.12×0.9÷(-0.9)-3.12÷(-0.4)×0.4= 3.12×0.9÷(-0.9)=3.12- 3.12÷(-0.4)×0.4=3.12-3.12=0