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rezolvati ecuatia: ax 2supra5=a-1supra4

Răspuns :

a(2/5)=a-(1/4)
2xa/5=(4a-1)/4
2 x a x 4= 5x(4a-1)
8x a=20x a-5
12x a=5
a=5/12
a (2 / 5 ) =a-(1/4)

2* a : 5=(4a-1)/4 ;

2 x a x 4= 5x(4a-1)

8x a=20x a-5

12x a=5

a=5/12