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DidianaGeorgi
a fost răspuns

a) x+21=35,3
b) 3x+1<32,02 in N
c) 2x-5,3=0,78
d) 12-(x-1)=2,4

Răspuns :

Renatemambouko
a) x+21=35,3
x=35,3-21
x=14,3
b) 3x+1<32,02 in N
3x<32,02-1
3x<31,02
x<31,02:3
x<10,34
c) 2x-5,3=0,78
2x=0,78+5,3
x=6,08:2
x=3,04
d) 12-(x-1)=2,4
12-x+1=2,4
x=12+1-2,4
x=10,6

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