rozwiąż równania :
a) x+ 3/ 3 = 5/7
b) 4/9 = y-3/5
c) 4-2x/ 3= 4(x-2)/5
d) 4-y/5-2y = 6/7
e) 1/3 = 2/4x-5
f) 2z-4/7 = 3
daje naj
z góry dzięki :D
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a) x + 3/3 = 5/7
x + 1 = 5/7 / - 1
x = - 2/7
b) 4/9 = y - 3/5 / + 3/5
y = 47/45
y = 1 i 2/45
c) 4 - 2x/3 = 4(x-2)/5
4 - 2x/3 = 4x-8/5 / *3
12-2x = 12x-24/5 / *5
60-10x = 12x - 24 / +10 x
60 = 22 x - 24 / +24
84 = 22x / :22
3,818181... = x
d) 4 - y/5 - 2y = 6/7 /*5
20 - y - 10 y = 30/7 /*7
140-7y-70y = 30
140 - 77y = 30 / -140
-77y = -110 / : -77
y = 1,428571
y = 1,43
e) 1/3 = 2/4x - 5
1/3 = 1/2x - 5 / *3
1 = 3/2x - 15 / * 2
2 = 3x - 30 / +30
32 = 3x / :3
10,67 = x
f) 2z - 4/7 = 3 /*7
14z - 4 = 21 / +4
14z = 25 / :14
z = 1,79