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2 years ago

X=-2-8 3x-4y=6 What is the answer for

Mathematics

1 answer:

WARRIOR [948]2 years ago

4 0

Answer: (x,y) = (-10, -9)

Step-by-step explanation:

(By replacement method ...)

1- x = -2-8 it's the same thing as x = -10.

2- Replace the given value of x in equation 3x - 4y = 6

Replacing ...

3 * (-10) -4y = 6

3- Then, Multiply 3 by -10;

4) Move -30 to the right side of the equal sign, getting: 6 + 30.

-4y = 36

5) Multiply by -1

-4y * (- 1) = 36 * (- 1) is equal to 4y = -36

6) The four is multiplying the y, so pass the four dividing, getting:

-36/4

The ratio of -36 by 4 equals -9.

Therefore...

x = -10

y = -9

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