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a fost răspuns

afla valorile lui x ; 5*x= 10*2 ; x/ 9 = 8 /2 ; 12 /4 = 9 /x ;3 *3 = x /8 ; x /5 = 36 /4 ; a * a * a = 27 , a = ....

Răspuns :

5*x=10*2
5*x=20
x=20:5
x=4

x:9=8:2
x:9=4
x=4*9
x=36

12:4=9:x
3=9:x
x=9:3
x=3

3*3=x:8
9=x:8
x=8x9
x=72

x:5=36:4
x:5=9
x=9*5
x=45

Nitugheorghe57
5×x=10×2⇒5x=20⇒x=20/5⇒x=4
x/9=8/2⇒2x=72⇒x=72/2⇒x=36
12/4=9/x⇒12x=36⇒x=36/12⇒x=3
3×3=x/8⇒9=x/8⇒x=9×8⇒x=72
x/5=36/4⇒x/5=9⇒x=9×5⇒x=45
a×a×a=27⇒a³=27
succes

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