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Slav-nsk [51]
4 years ago
13

Using adding and substitution to find the value of x for the set of equations x-y=120 x+y=150

Mathematics
1 answer:
Ronch [10]4 years ago
5 0
X= 135 and Y = 15. Hope that helps!
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Which ordered pair is a solution of the equation
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Answer:

OPTION D: NEITHER

Step-by-step explanation:

The given equation is: 7x - 2y = - 5

To find a solution to this, we substitute the options and compare LHS and RHS.

OPTION A: (1, 5)

LHS = 7(1) - 2(5) = 7 - 10 = -3

RHS = - 5

LHS $ \ne $ RHS.

So, this option is eliminated.

OPTION B: (-1, 1)

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So, this Option is eliminated as well.

OPTION C: It says both A and B. Clearly, this is eliminated as well.

Therefore, the answer is: OPTION D: NEITHER.

NOTE: This is a two variable equation. So, we need a minimum of two equations to determine the solution. Since, only one equation is given here, we use the help of options.

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