Solve the system of equations. Enter your answer as an ordered pair (x, y). 4x+y=−1 −5x−2y=−4
2 answers:
Answer:
Step-by-step explanation:
4x + y = - 1 -------------(I)
-5x - 2y = -4 -----------(II)
Multiply the equation (I) by 2 and then add the equations.
(I)*2 8x + 2y = -2
(II) <u>-5x - 2y = -4</u> {Now add and y will be eliminated}
3x = -6
x = -6/3
x = -2
Substitute x = -2 in equation (I)
4*(-2) + y = -1
-8 + y = -1
y = - 1 + 8
y = 7
Answer:
(-2, 7)
Step-by-step explanation:
4x + y = -1
-5x - 2y = -4
---------------------------------------
2(4x + y = -1) = 8x + 2y = -2
---------------------------------------
8x + 2y = -2
-5x - 2y = -4
3x = -6
÷3 ÷3
x = -2
-----------------------------------------
4(-2) + y = -1
-8 + y = -1
+8 +8
y = 7
I hope this helps!
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