Question

Rezolvare in mulțime a Q ecuațiile: a)2pe3x=46 b)x•[-3pe4]=18. c)1intreg-1pe5x=0,5. d)1pe5x - 1,3=1. e)1pe3x+2 întregi = 2pe3. f)5-2x=-2,6. g)3,6÷x=1,2. h)2,3x+1,2x=7. Plizz am nevoie acum urgență.

Answer 1

a) x=46×3/2
x=23×3
x=69
b)x=18×(-4/3)
x= 6×(-4)
x= -24
c) 1/1-1/5x=1/2
1/5x=1/1-1/2 amplificãm pe 1/1 cu 2
1/5x=1/2
x=1/2×5
x=5/2
d) 1/5x-13/10=1
1/5x=1+13/10 amplificãm pe 1 cu 10
1/5x=23/10
x=23/10×5
x=115/10=23/2
e) 1/3x+2/2=2/3
1/3x=2/3-2/2 amplificãm pe 2/3 cu 2 si pe 2/2 cu 3
1/3x=4/6-6/6
1/3x= -2/6
x= -2/6×3
x= -6/6
x= -1
f) 5-2x= -13/5
2x=5+13/5 amplificãm pe 5 cu 5
2x=25/5+13/5
2x=48/5
x=48/5×1/2
x=24/5
g) 36/10:x=12/10
x=36/10×10/12
x=2
h) 3,5x=7
35/10x=7
x=7×10/35
x=10/5
x=2