Solve the equation 7x=15+6 using substitution.(1 point)
x=
To solve the equation 7x = 15 + 6 using substitution, we can substitute the right-hand side of the equation with a constant. Thus, we can rewrite the equation as:
7x = 21
Now, we can divide both sides of the equation by 7 to solve for x:
7x/7 = 21/7
x = 3
Therefore, x = 3.