prosze o pomoc z góry dziękuje
2)
15\4*6\5+(-5\8)-1\4=90\20+(-5\8)-1\4=9\2+(-5\8)-1\4=36\8+(-5\8)-2\8=29\8
3)
√16+9*1\5+9\16=√25*1\5+9\16=5*1\5+9\16=5\5+9\16=1 9\16
4)
5\4+(-8\3)⁻² =5\4+(-3\8)² =5\4+9\64=80\64+9\64=89\64
5)
(5\3)³ * (3\10)³ *(2\7)³ *(-14)³ =(1\2)³ *(2\1)³ *(-2)³ =(-2)³ =-8
6)
(36\25÷ 24\5)⁻³ =(36\25*5\24)³ =(3\10)³=27\1000
7)
a) 5,5*20%=1,1
b) 3% -12
100% -x
3x=1200 /÷3
x=400
8)
-2x-6+6x+3-4=0
4x=7 /÷4
x=7\4
b)
-x-1=-2x-2
-x+2x=-2+1
x=-1
c)
2x-3 >7
2x >10 /÷2
x >5
d)
3x+12-1 ≤ x
2x ≤-11 /÷2
x ≤ -11\2
x ≤ -5 1\2
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2)
15\4*6\5+(-5\8)-1\4=90\20+(-5\8)-1\4=9\2+(-5\8)-1\4=36\8+(-5\8)-2\8=29\8
3)
√16+9*1\5+9\16=√25*1\5+9\16=5*1\5+9\16=5\5+9\16=1 9\16
4)
5\4+(-8\3)⁻² =5\4+(-3\8)² =5\4+9\64=80\64+9\64=89\64
5)
(5\3)³ * (3\10)³ *(2\7)³ *(-14)³ =(1\2)³ *(2\1)³ *(-2)³ =(-2)³ =-8
6)
(36\25÷ 24\5)⁻³ =(36\25*5\24)³ =(3\10)³=27\1000
7)
a) 5,5*20%=1,1
b) 3% -12
100% -x
3x=1200 /÷3
x=400
8)
-2x-6+6x+3-4=0
4x=7 /÷4
x=7\4
b)
-x-1=-2x-2
-x+2x=-2+1
x=-1
c)
2x-3 >7
2x >10 /÷2
x >5
d)
3x+12-1 ≤ x
2x ≤-11 /÷2
x ≤ -11\2
x ≤ -5 1\2