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Can you help me on the question

Can you help me on the question-example-1
User BREMI
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2 Answers

4 votes

Answer:


\displaystyle [-3, -2]

Step-by-step explanation:

{3x - 8y = 7

{x + 2y = −7

−⅓[3x - 8y = 7]

{−x + 2⅔y = 2 >> New Equation

{x + 2y = −7

_____________


\displaystyle (4(2)/(3)y)/(4(2)/(3)) = (-9(1)/(3))/(4(2)/(3))


\displaystyle -2 = y[Plug this back into both equations above to get the x-coordinate of −3];
\displaystyle -3 = x

I am joyous to assist you anytime.

User Anthr
by
5.6k points
1 vote
Answer:
(-3, -2)

Step-by-step explanation:
-Solve the equation for x-
3x -8y = 7
x= -7 -2y
-Substitute the given value of x into the equation 3x -8y =7
3(-7 -2y) -8y =7
-Solve the equation for y-
y= -2
-Substitute the given value of y into the equation x= -7 -2y
x= -7 -2 x (-2)
-Solve the equation for x
x= -3
-The possible solution of the system is the ordered pair (x, y)
(x, y) = (-3, -2)
User Yannick Schall
by
6.5k points