a)
x/4 + x/3 = 14
(3x + 4x)/12 = 14
7x = 168
x = 168/7 = 24
Ответ: 24
б)
a/2 - a/8 = 5
(8a - 2a)/16 = 5
6a = 80
a = 80/6 = 40/3
Ответ: 40/3
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Answers & Comments
a)
x/4 + x/3 = 14
(3x + 4x)/12 = 14
7x = 168
x = 168/7 = 24
Ответ: 24
б)
a/2 - a/8 = 5
(8a - 2a)/16 = 5
6a = 80
a = 80/6 = 40/3
Ответ: 40/3