Q. Find the missing number so that the equation has no solutions. ____x−15=4x+12
Understand Equation Solutions: Understand when an equation has no solutions. An equation has no solutions when the two sides of the equation are parallel lines, which means the coefficients of x are the same, but the constants are different.
Compare Coefficients of x: Compare the coefficients of x on both sides of the equation.____x - 15 = 4x + 12To have no solutions, the coefficient of x on the left side must be the same as the coefficient on the right side, which is 4.
Determine Constant Terms: Determine the constant terms on both sides of the equation.Since the coefficients of x are the same, we need to ensure that the constants on both sides of the equation are different to have no solutions. The left side has a constant of −15, and the right side has a constant of +12. Since −15 is not equal to +12, the equation will have no solutions if the coefficients of x are the same.
Conclude Missing Number: Conclude the missing number.The missing number is the coefficient of x on the left side that will make the equation have no solutions. Since the coefficients must be the same and the constants are already different, the missing number is 4.
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