Question

e) 2,5 + 1/4 X= 5 va rog ajutor

Answer 1

2,5 + 1/4 x = 5
1/4 x = 5 - 2,5
1/4 x = 5 - 25/10 = 50/10 - 25/10 = 25/10
x = 25/10 : 1/4 = 25/10 x 4/1
x = 10

Answer 2

2,5 + 1/4 x = 5
2,5 + x/4 = 5
( amplificam totul cu 4 )
2,5 x 4 + x = 20
10 + x = 20
x = 20 - 10
x = 10

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