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The equation relates the values of two linked currencies, where R is the value in dollars of one currency and S is the value in
The equation relates the values of two linked currencies, where R is the value in dollars of one currency and S is the value in
admin
2017-11-11
59
问题
The equation
relates the values of two linked currencies, where R is the value in dollars of one currency and S is the value in dollars of the other currency. Which of the following equations can be used to convert dollar values from the R currency to the S currency?
选项
A、
B、
C、
D、
E、
答案
A
解析
You can simplify the equation by multiplying 7 times both sides, which results in the equation
, which can be restated as 5R-15=4S+32, which can be restated as
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