Which of the following linear equations in one variable are in standard form ?
A
2x+1=0
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B
2x+5=1
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C
2x+1=1
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D
2x+5=2
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Solution
The correct option is A 2x+1=0 ax+b=0 is the standard form of a linear equation in one variable, where 'a' and 'b' are constants and 'a' is not equal to zero. 'x' is the variable.