6(3x+2)/3=(x-1)/7 is an equation (a) 1variable (b) 2 variables (c) 3variables (d) none of these
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(a) 1 variable
Step-by-step explanation:
Variable is a value that changes all the time and varies time.
It is denoted by a small letter like x,y,z,etc.
Therefore, in this question, the variable is x.
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