Q. Find the missing number so that the equation has infinitely many solutions. ____x+15=−3x+15
Identify Equation: To determine the missing number for the equation to have infinitely many solutions, we need to make the left side of the equation identical to the right side. The equation is ____x + 15 = -3x + 15.
Ensure Identical Sides: Since the equation will have infinitely many solutions when both sides are identical, the coefficients of x on both sides must be the same, and the constant terms must also be the same.
Check Constant Terms: The constant terms on both sides are already the same, as they are both 15. Therefore, we only need to ensure that the coefficients of x are the same.
Match Coefficients: The coefficient of x on the right side is −3. For the equation to have infinitely many solutions, the coefficient of x on the left side must also be −3.
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