prosze o pomoc w proporcjach .a)2/x=3/x-1 b)4/x+1=5/x c)3/5=2x-1/2-5x d)2x+1/1-2x=2/3 e)0,4x-1/3=2x-5/2 f)4+x do kwadratu/x=2x-1/2 bardzo dziekuje
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a)
2/x = 3/x-1
2(x-1)= 3x
2x-2=3x
2x-3x=2
-x=2//×(-1)
x=-2
b)
4/x+1 = 5/x
5(x+1)=4x
5x+5=4x
5x-4x=-5
x=-5
c)
3/5 = 2x-1/2-5x
3(2-5x)=5(2x-1)
6-15x=10x-5
-15x-10x=-5-6
-25x=-11//÷25
x=0,44
d)
2x+1/1-2x + 2/3
3(2x+1)=2(1-2x)
6x+3=2-4x
6x+4x=2-3
10x=-1//÷10
x=-0,1
e)
0,4-1/3 = 2x-5/2
3(2x-5)=2(0,4-1)
6x-15=0,8-2
6x-15=-1,2
6x=-1,2+15
6x=13,8//÷6
x=2,3
f)
4+x²/x = 2x-1/2
2(4+x²)=x(2x-1)
8+2x²=2x²-x
8+2x²-2x²=-x
8=-x//×(-1)
-8=x
Chyba dobrze;) Liczę na naj;D