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a fost răspuns

afla numarul x apoi verifica
2*x+8=14
9*x-18=0
2*|6-(x:2)=6

30-2*x=24
4*x:10=10
|7+3*(4*x-3)|*5=470

2*x+3=49
2*x-4=x+4

va rog mult ofer 70 puncte

Răspuns :

Gabcen71
2*x+8=14
2*x=14-8
2*x=6
x=6:2
x=3

9*x-18=0
9*x=18
x=18:9
x=2

2*[6-(x:2)]=6
6-(x:2)=6:2
6-(x:2)=3
x:2=6-3
x:2=3
x=3*2
x=6

30-2*x=24
2*x=30-24
2*x=6
x=6:2
x=3

4*x:10=10
4*x=10*10
4*x=100
x=100:4
x=25

[7+3*(4*x-3)]*5=470
7+3*(4*x-3)=470:5
7+3*(4*x-3)=94
3*(4*x-3)=94-7
3*(4*x-3)=87
4*x-3=87:3
4*x-3=29
4*x=29+3
4*x=32
x=32:4
x=8

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