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cat face 3+2*(x:4-12)=9

Răspuns :

3+2*(x:4-12)=9

2*(x:4-12)=6

x:4-12=3

x:4=15

x=15/4

3+2*(x:4-12) = 9

2*(x:4-12) = 9-3 = 6

x:4-12 = 6:2 = 3

x:4 = 12+3 = 15

x = 15:4 = 3,75