Question

7x = 15 +6 using substitution

Answer 1

First, solve the equation 7x = 15 + 6:

7x = 15 + 6
7x = 21

Now, solve for x by dividing both sides by 7:

x = 21 / 7
x = 3

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