Oblicz:
a)2 1/4-1 1/4:3 5/7=
2 -2 0
b)(-1 1/4) + 3 -7=
c)|x|=1
d)|x-3|=4
f)|x+2}<2
2 1/4-1 1/4:3 5/7=2 1/4-5/4* 7/25=2 1/4-35/100=2 25/100-35/100=1 9/10
(-1 1/4) + 3 -7=1 3/7-7=5 2/7
|x|=1
x=1 lub x=-1
|x-3|=4
x-3=4 lub x-3=-4
x=7 lub x=-1
x+2}<2
x+2<2 lub x+2>-2
x<0 lub x>-4
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2 1/4-1 1/4:3 5/7=2 1/4-5/4* 7/25=2 1/4-35/100=2 25/100-35/100=1 9/10
(-1 1/4) + 3 -7=1 3/7-7=5 2/7
|x|=1
x=1 lub x=-1
|x-3|=4
x-3=4 lub x-3=-4
x=7 lub x=-1
x+2}<2
x+2<2 lub x+2>-2
x<0 lub x>-4