Răspuns:
Explicație pas cu pas:
a)
6(5x/6 - 4/3) = -5
5x/6 - 4/3 = -5/6
5x/6 = 4/3 -5/6 = 8/6 - 5/6 = 3/6 = 1/2
x = 6/2*5 = 3/5
____________
c)
3/14 + 5x/21 = -13/4 *(-3/7) = 39/28
5x/21 = 39/28 - 3/14 = 39/28 - 6/28 = 33/28
x = 21*33/28*5 = 3*33/4*5 = 99/20
_______________
e)
46/15 - 29x/15 = 1/6
29x/15 = 46/15 - 1/6 = 92/30 - 5/30 = 87/30 = 29/10
x = 15*29/10*29 = 15/10 = 3/2
