x=12 is a solution for the equations 48÷x=12 and 12x=144.
Let's check each equation with the value x = 12:
For the equation x+4=12:
12+4=16 which is not equal to 12. So, x=12 is not a solution for this equation.
For the equation 48÷x=12:
48÷12=4, which is equal to 12. So, x=12 is a solution for this equation.
For the equation 12−x=4:
12−12=0, which is not equal to 4. So, x=12 is not a solution for this equation.
For the equation 12x=144:
12×12=144, which is equal to 144. So, x=12 is a solution for this equation.
Therefore, x=12 is a solution for the equations 48÷x=12 and 12x=144.