How do you solve the following system?: #13x +17y =11, -6x +5y = -27#
Express y in terms of x and insert the expression in the other equation.
Substitution means expressing one variable in terms of another. So, you'll need to remake the expression in such a way that x (or y, doesn't matter) will be alone on one side of the equation.
Let's pick the second one for this, since it seems easier:
Then, insert the last expression in the other equation:
Then, replace the found y in the equation with isolated x to find x:
And finally, the answer is: