SOLUTION: what would be the first step to solve this following system of equations using the substitution of the equation using the substitution method / 7x-3y=21 y=x+2

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Question 1149993: what would be the first step to solve this following system of equations using the substitution of the equation using the substitution method / 7x-3y=21 y=x+2
Answer by ikleyn(52910) About Me  (Show Source):
You can put this solution on YOUR website!
.

Step 1.  Using second equation, substitute y = x+2 into the first equation.


         You will get then


             7x - 3*(x+2) = 21.


From this point, you may continue further next steps.