Question

rezolvati ecuatia in multimea Q
a)3,6:x=1,2
b)2,3x+1,2x=7
c)1,5+x=2
d) (2x+1supra3):4=1supra3
e)0,47x-0,14x=1,65
f)7supra9x-2supra3x=2

Answer 1

a) 36/10 : x = 72/10
x = 36/10 : 72/10
x = 36/10 x 10/72
x = 1/2

b) 23/10x + 12/10x = 7
23/10x + 12/10x = 7
35/10x = 7
x = 7 : 35/10
x = 7 x 10/35
x = 2

c) 1,5 + x = 2
x = 2 - 1,5
x = 0.50

d) 2x + 1/3 = 1/3 x 4
2x + 1/3 = 4/3
2x = 4/3 - 1/3
2x = 3/3
2x = 1
x = 1/2

e) 47/100x - 14/100x = 165/100
33/100x = 165/100
x = 165100 : 33/100
x = 165/100 x 100/33
x = 5

f) 7x - 6x = 18
x = 18