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Byju's Answer
Standard VII
Mathematics
Value of an Expression
If x=1, y=-1,...
Question
If x = 1, y = -1, then the value of 5x - 4y is
A
1
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B
5
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C
9
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D
11
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Solution
The correct option is
C
9
5x - 4y,
substitute the value of x = 1 and y = -1 in the above expression, we get,
= 5(1) - 4(-1)
= 5 + 4
= 9
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