Question

From the options below, choose the first step to solve the following system of equations using substitution.



x = y + 7
x = -1/5y - 10

Answer 1

First, let's solve one of the equations for one variable. Let's solve the first equation x = y + 7 for x.

So, x = y + 7.

We can substitute this expression for x into the second equation, x = -1/5y - 10, to solve for y.

Substitute y + 7 for x in x = -1/5y - 10:

(y + 7) = -1/5y - 10

Now you can continue solving this equation for y first.