Solve the equation 7x=15+6 using substitution.(

Answer 1

To solve the equation 7x = 15 + 6 using substitution, we substitute the value of 15 + 6 into the equation for x:

7x = 21

Now we divide both sides by 7 to solve for x:

x = 21/7
x = 3

Therefore, the solution to the equation 7x = 15 + 6 using substitution is x = 3.