No, a value cannot be substituted for x to make the equation r - 5 = 37 a true number sentence. This is because the equation does not contain the variable x. Therefore, no matter what value is substituted for x, the equation will always be false.
In this specific equation, r is the variable. So, the equation r - 5 = 37 can only be made true by substituting values for r.
For the equation, r - 5 = 37, can a value be substituted for x to make that a true number sentence? How many values could be substituted for x and have a true number sentence? Explain your answer
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