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Rezolvati acuatia in multimea N efectuind si verificarea: A)x+18=24B)a+35=20C)8z=160D)5y=18E)x:12=96F)t:6=100G)9x-1=0H)4x-20=0 DAU CORINITA !!!!!!!!!

Răspuns :

CosmoteRo
x+18=24
x=24-18
x=6

a+35=20
a=20-35
a=-15

8z=160
z=160:8
z=20

5y=18
y=18:5
y=3,6

x:12=96
x=96x12
x=1152

t=100x6
t=600

9x-1=0
9x=1
x=1:9
x=0,1

4x-20=0
4x=20
x=20:4
x=5
[tex]a) x+18=24 \\ x=24-18 \\ x=6 \\ V: 6+18=24 \\ b) a+35=20 \\ a=20-35 \\ a=-15 \\ V:-15+35=20 \\ c) 8*z=160 \\ z=160:8 \\ z=20 \\ V: 8*20=160 \\ d) 5y=18 \\ y=18:5 \\ y=3,6 \\ S= vida, nu are solutii in multimea N\\ [/tex]
[tex]e) x:12=96 \\ x=96*12 \\ x=1152 \\ V. 1152:12=96 \\ f) t:6=100 \\ t=100*6 \\ t=600 \\ V. 600:6=100 \\ g) 9x-1=0 \\ 9x=1 \\ x=1:9 \\ x=0,(1) \\ S=vida, nu are solutii in multimea N \\ h) 4x-20=0 \\ 4x=20 \\ x=20:4 \\ x=5 \\ 4*5-20=0[/tex]

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