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3 years ago

Complete the missing value/help?

Mathematics

2 answers:

IrinaVladis [17]3 years ago

8 0

Answer:6

Step-by-step explanation:

6x + 7y = 4x + 4y

7y - 4y = 4x - 6x

3y = -2x

x= 3y/-2 ----------1

From the picture, y = -4

Substitute y = -4 in eqn 1

x = 3× -4 /-2

x = 12/2 = 6

blagie [28]3 years ago

5 0

What it is basically asking is if Y = -4, find the value of x in the equation 6x + 7y = 4x + 4y

To solve this you just need to plug in -4 for y and solve for x

6x + 7(-4) = 4x + 4(-4)

6x - 28 = 4x - 16

Now isolate x by adding 28 to both sides

6x - 28 + 28 = 4x - 16 + 28

6x = 4x + 8

and subtract 4x from both sides

6x - 4x = 4x - 4x + 8

2x = 8

divide both sides by 2

2/2x = 8/2

x = 4

x = 4, y = -2

Answer: (4, - 2)

Hope it helps :)

Bransliest would be appreciated

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Let's check:

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