8 should go into the blank space to create an equation with many solutions
Here, we want to find a value which when placed on the right hand side will give an equation with an infinite number of equations
In this case, we are looking at having an infinite number of solutions
Rephrasing this, we simply want a value on the right hand side that will make the equation have an infinite number of solutions
In cases like this what we have on the right hand side will be equal to what we have on the left hand side
To make both equal, we simply place 8 in the blank space