Solve the system of equations using substitution method x-y=5 3x+2y=10

So to be able to use the substitution method, we have to solve one of the equations for one of the variables. For this, I will solve the first equation for x. For the first equation, add both sides by y:

Now that we know that x = 5 + y, replace x in the second equation with (5 + y) and solve for y as such:

Now that we know the value of y, substitute it into either equation to solve for x as such:

In short, in (x,y) form your answer is (4,-1).

one that is bigger than 3 1/2

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