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Mathematics, 22.06.2019 21:00 tiffanibell71

Elimination method using addition and subtraction4x-2y=-1 and -4x+4y=-2

Answers

ansver
Answer from: bgallman153p71edg

(-1,-3/2)

Step-by-step explanation:

4x-2y=-1

-4x+4y=-2

Add these two equations together to elimianate x

4x-2y=-1  

-4x+4y=-2

2y = -3

Divide by 2

2y/2 =-3/2

y = -1.5

Now we need to find x

4x-2y =-1

4x -2(-1.5) = -1

4x +3 = -1

Subtract 3 from each side

4x+3-3 =-1-3

4x= -4

x=-1

ansver
Answer from: davienwatson8
1. Add 4x back into -2, you now have -4y=-4x-2. Add +4 from y and now you are at y=-4x+2 and this is the answer!

2. Add -9x back into -3, you now have -4y=9x-3. Add +4 from y and now you are at y=9x-7 and this is your answer!!

I hope this helped! Brainliest? :) -Raven❤️
ansver
Answer from: juliana211

-5x-8y=-5

Step-by-step explanation:

add right sides of equation and even them with result of adding right sides of equation

4x-4y-9x-4y=-2-3

-5x-8y=-5

ansver
Answer from: lizzyhearts

-5x-8y=-5

Step-by-step explanation:

4x-9x = -5x

-4y-4y = -8y

ansver
Answer from: yes1225

-5x-8y=-5

Step-by-step explanation:

add right sides of equation and even them with result of adding right sides of equation

4x-4y-9x-4y=-2-3

-5x-8y=-5

ansver
Answer from: laura1649

Step-by-step explanation:

You will subtract both numbers so

(4x - 4y) - (-9x - 4y) = 2+(-3)

4x + 9x = - 1

13x = - 1

x = - 1 /13

Next you have to put the value of x in equation no 1 and find the value of y

ansver
Answer from: gaby4567
Subtract 4x form both sides:-

-24y = -4x - 2
Divide both sides by -24:-

y =1/6 x  + 1/12
ansver
Answer from: daniellekennedy05
The answer is X equals 1, while y equals 3/2
ansver
Answer from: dramaqueenactr2040
The answer to your question 4x-4y= -2 plus -9x-4y= -3 is -5 because in order to find the result of the two equations would be to add the solutions to both of them together.

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