Solve the following system of equations using elimination:
3x + 5y = 4
4x + 2y = -18

Question

Solve the following system of equations using elimination:
3x + 5y = 4
4x + 2y = -18

anonymous · Answer

A.	(-12, 8)
	B.	(-7, 5)
	C.	(-4, -1)
	D.	(-2, 2)

anonymous · Answer

3x + 5y = 4                                            3x + 5y = 4
    -5(4x + 2y = -18)    ---->                       -20x - 10y = 90 ----------------------

----->   2(3x + 5y = 4)                                      6x + 10y = 8
              -20x -10y = 90 -------->                -20x - 10y = 90   ------------------

-----> the 10y's cancel out, you are left with -- > -14x = 98 --->  ((((   x = -7   ))))  

according to your answer choices, the only one that is correct is B because the X = -7