Ответ:
Пошаговое объяснение:
7/24 = 2/(x-1)
7*(x - 1) = 24*2
7x - 7 = 48
7x = 48 + 7
7x = 55
x = 55:7
x = 7 6/7
-------------
3/(2x-1) = 1/4
2x - 1 = 4*3
2x - 1 = 12
2x = 12 + 1
2x = 13
x = 13 : 2
x = 6,5
-----------------
9/2 = (x+3)/4
2*(x+3) = 9*4
2x + 6 = 36
2x = 36 - 6
2x = 30
x = 30:2
x = 15
==========
(5+x)/3 = 7/2
2*(5 + x) = 7*3
10 + 2x = 21
2x = 21 - 10
2x = 11
x = 11:2
x = 5,5
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Answers & Comments
Ответ:
Пошаговое объяснение:
7/24 = 2/(x-1)
7*(x - 1) = 24*2
7x - 7 = 48
7x = 48 + 7
7x = 55
x = 55:7
x = 7 6/7
-------------
3/(2x-1) = 1/4
2x - 1 = 4*3
2x - 1 = 12
2x = 12 + 1
2x = 13
x = 13 : 2
x = 6,5
-----------------
9/2 = (x+3)/4
2*(x+3) = 9*4
2x + 6 = 36
2x = 36 - 6
2x = 30
x = 30:2
x = 15
==========
(5+x)/3 = 7/2
2*(5 + x) = 7*3
10 + 2x = 21
2x = 21 - 10
2x = 11
x = 11:2
x = 5,5