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31.05.2020 •
Mathematics
(x+ 3/8 )÷ 2/5 =− 15/8
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Ответ:
x = -9/8 = -1 1/8
Step-by-step explanation:
(x+ 3/8 )÷ 2/5 =− 15/8
Copy dot flip
(x+ 3/8 )* 5/2 =− 15/8
Multiply each side by 2/5
(x+ 3/8 )*5/2 *2/5 =− 15/8*2/5
x+3/8 = -3/4
Subtract 3/8 from each side
x+3/8 - 3/8 = -3/4 - 3/8
Get a common denominator
x = -6/8 - 3/8
x = -9/8
x = -1 1/8
Ответ: