Solve the following system of equations. Express your answer as an ordered pair in the format (a, b), with no spaces between the numbers or symbols.

3x+4y=16

-4x-3y=-19

Solve it by substitution. First let's rewrite the first equation (3x+4y=16) so we have y = something, then we'll substitue that in to the other equation.

3x+4y=16

4y=-3x+16

y=-3/4x+4

Now we can substitute this into the other equation.