Given:
The equations are x-7y=14 and -4x + 14y = 28.
Step-by-step explanation:
it can be observed that for elimainting a variable from two equation coefficient of one variable for each equation must be equal and opposite.
So, if we multiply equation x-7y=14 by 4 and then coefficient of x becomes 4, which is opposite and equal to coefficient of x in equation -4x + 14y = 28.
Thus, equation x - 7y = 14 is to be multiplied by 4.