Question

Prosze to na dzisiaj

Answer 1

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a skąd mam wiedzieć

Answer 2

Zad2
a)12:(-3)+(-3)x4=-4+(-12)=-16
b)-40:(2+3)x4=-40:5x4=-8x4=-32
c)-40:[(2+3)x4]=-40:[5x4]=-40:20=-2
d)40:(-8)-(-2)x(2-4)=-5+2x(-2)=-5-4=-9
e)40:[(-8)+(-2)]x(2-4)=40:(-10)x(-2)=-4x(-2)=8
f)-2x(4+(-5))+4x(-2-(-5))=-2x(-1)+4x(-2+5)=2+4x3=2+12=14
g)-2x(4+(-5))+2x(-4-(-5))=-2x(-1)+2x(-4+5)=2+2x1=2+2=4
h)-12:(-3+(-4)-(-5)):3=-12:(-2):3=2

zad2
a)2+(-3)x4=2-12=-10
b)(2+3)x4=5x4=20
c)2+3x4=2+12=14
d)2+3x(4-5)=2+3x(-1)=2+(-3)=-1
e)(2+3)x(4-5)=5x(-1)=-5
f)[2+(-3)x4=-1x4=-4
g)[2+(-3)]x(-4)=(-1)x(-4)=4
h)[2-(-3)]x[-4-(-6)]=[2+3]x[-4+6]=5x2=10