Question

enter a number into each box to create an equation that has an infinite number of solutions.
$7(4x + 3) - x = \square x + \square$

Explanation:

Step1: Expand the left-hand side

$7(4x + 3) = 28x + 21$

Step2: Subtract $x$ from the result

$28x + 21 - x = 27x + 21$

Step3: Match for infinite solutions

For the equation $27x + 21 = \square x + \square$ to have infinite solutions, the coefficients and constants must be equal, so the blanks are 27 and 21.

Answer:

$27x + 21$