Solve by using substitution.=−3−3=−4−5

hdhduxhx, this is the solution to the exercise:Multiplying by -1 the second equation, we have:y = -3x - 3-y = 4x + 5____________0 = x + 2x = -2_____________Now we can solve for y in the first equation, this way:y = - 3x - 3y = -3 (-2) - 3y = 6 - 3y = 3____________Finally, let's prove that x = -2 and y = 3 is correct for the second equation, as follows:y = -4x - 53 = -4 (-2) - 53 = 8 - 53 = 3___________We proved that x = -2 and y = 3 is correct.