Question

aflati x din:
x/15=7/3; 2x+5/3x-7=11/2

Ma puteti ajuta va rog frumos?

Answer 1

Răspuns:

Explicație pas cu pas:

x/15 = 7/3

3*x = 7*15

3*x = 105

x = 105 : 3 = 35

_______________

(2x + 5)/(3x - 7) = 11/2

2*(2x + 5) = 11*(3x - 7)

4x + 10 = 33x - 77

33x - 4x = 10 + 77

29x = 87

x = 87 : 29 = 3