Question

Tìm x :

X x 13 = X + 180

Answer 1

x*13=x+180

=>13x-x=180

=>12x=180

=>x=180:12

=>x=15

Answer 2

X x 13 = X + 180

X x 13 - 180 = X

X x 13 - X = 180

X x 12 = 180

X = 180 : 12

X = 15

Answer 3

X x 13=x+180

=>13x - x = 180

=>12x = 180

=>x = 180:12

=>x = 15

Answer 4

=x+x+...+x=x+180

=x+(X x 12)=x+180

=X x 12=180

=x=180:12

=x=15

Answer 5

X x 13=x+180

=>13x - x = 180

=>12x = 180

=>x = 180:12

=>x = 15

Answer 6

x.13= x+180

13x= x+180

13x-x= 180

12x= 180

x=180:12

x=15
 

Answer 7

X x 13 = X + 180

  13X - X = 180

  12X = 180 

    X = 180 : 2

   X = 15

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