ZAD 1 DANE SA ZBORY zaznacz na osi A {-1,4,1/2,3}B {0,4,3} C {4,1,10}ZNAJDZ ZBORY NIECH A =(- NIESKONCZONOSC ,3)B =ZAD 2a) 3x -5 =2(x-1)+1b) 1/2(x -3)=1/6(x+2) ZAD 3 a) 3(1-5x)-(3x-7)>2
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zadanie 2
a) 3x-5=2(x-1)+1
3x-5=2x-2+1
3x-2x=-2+1+5
x=4
b)1/2(x-3)=1/6(x+2)/*6
3(x-3)=x+2
3x-9=x+2+3x-x=2+9+3x=11/:2
x=11/2=5 1/2
zadanie 3
a) 3(1+5x)-3x-7>2
3+15x-3x-7>2
15x-3x>2-3+7
12x>6/:12
x>6/12=1/2