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a fost răspuns

determi x astfel icat:
1) 2x-5,3=0,78
2) 12-(x-1)=2,4
3) 3,(2)+x<9,(7)

Răspuns :

Uuuuitsmee
1)
2x=6,08
x= 608/100÷2
x=152/25 ÷2
x=152/25× 1/2
x=76/25 ×1
x=76/25

2)
12-(x-1)=2,4
12-x+1=2.4
13-×=2.4
-x=2.4-13
-x=-10.6
x=10.6

3)
3.(2) +x <9. (7)
32-3/9 +x <97-9/9
29/9+x <88/9
x <88-29/9
x <59/9