" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
3,8*1,2=1,9*x/:1,9
2*1,2=x
x=2,4
b)(y+3)/1,5=12/3/4
4*(y+3)=5/3 *1,5
4y+12=5/3 *3/2
4y=5/2 -12
4y=(5-24)/2
4y=-19/2/:4
y=-19/8
y=-2i3/8
c)2,5/(2z-0,4)=1 1/4
2,5/(2x-0,4)=5/4
2,5*4=(2z-0,4)*5
10=10z-2
10+2=10z
12=10z/:10
z=1,2 za:ł2z-0,4≠0
2z≠0,4
z≠0,2 mianownik nie może być =0
d)2/3=(3a-4)/(a+2)
2*(a+2)=3(3a-4)
2a+4=9a-12
2a-9a=-12-4
-7a=-16
a=16/7
a=2 i 2/7 zał :a+2≠0
a≠-2 mianownik nie może być równy 0
e)(11/3 b-4)/(b+2,4)=3/0,75
(11/3 b-4)/(b+2,4)=4
1 1/3 b-4=4(b+2,4)
4b/3 -4=4b+9,6
4b/3-4b=9,6+4
(4b-12b)/3=13,6
-8b/3=13,6/(-8/3)
b=-136/10 * 3/8
b=-17/10 * 3
b=-51/10
b=-5,1 zał b+2,4≠0
b≠-2,4
uwaga 3/0,75=3/3/4=3 *4/3=4
f))(h+4)/2h=(h+0,25)/(2h-3)
(h+4)(2h-3)=(h+0,25)2h
2h²-3h+8h-12=2h²+0,5h
2h²-2h²+5h-0,5h=12
4,5h=12/:4,5
h=12* 10/45
h=8/3
h=2 i2/3