100pts: Let x and y be integers such that 17 is a factor of (3x + 5y). Prove that 17 is also a factor of (8x + 19y).

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.