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a fost răspuns

7x - 1= 48
x /3=27
20/x=4
9-x=5
17/x=1
36x=144
5x+3=58
44/x=44

Răspuns :

Cristiana106
7x-1=48
7x=48+1
7x=49
x=49/7
x=7

x/3=27
x=27·3
x=81

20/x=4
x=20/4
x=5

9-x=5
x=9-5
x=4

17/x=1
x=17/1
x=17

36x=144
x=144/36
x=4

5x+3=58
5x=58-3
5x=55
x=55/5
x=11

44/x=44
x=44/44
x=1

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