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Korvikt [17]
3 years ago
9

Find the solution to the system of equations.

Mathematics
1 answer:
Tanya [424]3 years ago
7 0

Answer:

x = - 4, y = 7

Step-by-step explanation:

Given the 2 equations

- 7x - 2y = 14 → (1)

6x + 6y = 18 → (2)

Multiplying (1) by 3 and adding to (2) will eliminate the y- term

- 21x - 6y = 42 → (3)

Add (2) and (3) term by term to eliminate y

- 15x = 60 ( divide both sides by 15 )

x = - 4

Substitute x = - 4 into either of the 2 equations and evaluate for y

Substituting into (2)

6(- 4) + 6y = 18

- 24 + 6y = 18 ( add 24 to both sides )

6y = 42 ( divide both sides by 6 )

y = 7

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Irina18 [472]

Answer: 63

Step-by-step explanation: we need 6 units of 1/6 to equal 1

6*10=60

6* 1/6=6/6=1

1/2*6=6/2=3

60+3=63

4 0
2 years ago
35 points!
kifflom [539]

Answer:

22

Step-by-step explanation:

Im sure because my sister got the same question on a test and she put 22 and got it right

3 0
3 years ago
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PLEASE HELP ME!! 12 points and brainliest!!!!!!
Darina [25.2K]
What you want to do is get x alone. So, divide both sides by -1/2 so x is alone. -12 divided by -1/2 is 24. Since this is an  inequality you have to flip over your inequality sign when multiplying or dividing by a negative so your answer is now x>24

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3 years ago
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2m-6=4m+8 how do i answer this in algebraic proof
Nonamiya [84]

Answer:

m=-7

Step-by-step explanation:

You begin with the equation:

2m-6=4m+8

The first step of this would be to subtract 2m from both sides. This is the subtraction property of equality.

-6=2m+8

The next step would be to subtract 8 from both sides. This is the subtraction property of equality.

-14=2m

Next, divide both sides by 2. This is the division property of equality.

-7=m

The final step would be the symmetric property of equality.

m=-7

Therefore your proof would have the steps:

subtraction property of equality

subtraction property of equality

division property of equality

symmetric property of equality

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