Fill In the blank Type your answer in the box and then click

Fill In the blank: Type your answer in the box and then click \"submit.\" Solve the following system of equations. Enter the y -coordinate of the Round your answer to the nearest tenth. 5x + 2y = 21 - 2x + 6y = -34

Solution

5x+2y=21 multiply by 2 we obtain    10x+4y= 42 (a)

-2x+6y=-34 multiply by 5 we obtain   -10x+30y=-170 (b)

solving (a) and (b) we obtain

34y= -128   y= -3.76

therefore y=