3 years ago

X+y= -6 ? A(y=3x -1 B(y=-x+3 C( y=-x- 6 D(y =-6x -1

Mathematics

1 answer:

PtichkaEL [24]3 years ago

8 0

The answer would be b hope I'm helpful

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makkiz [27]

For this case we have the following system of equations:

$8x-9y = -122\\-8x-6y = -28$

To solve, we add both equations:

$8x-8x-9y-6y = -122-28\\-15y = -150\\y = \frac {-150} {- 15}\\y = 10$

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$8x = -122 + 9y\\x = \frac {-122 + 9y} {8}\\x = \frac {-122 + 9 (10)} {8}\\x = \frac {-122 + 90} {8}\\x = \frac {-32} {8}\\x = -4$

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ANswer:

Option C

5 0

3 years ago

The work of a student to solve the equation 3(2x − 4) = 8 + 2x + 6 is shown below: Step 1: 3(2x − 4) = 8 + 2x + 6 Step 2: 5x − 7

andrezito [222]

The answer was actually posted on another one but it should be step 2; 6x - 12 = 14 + 2x. Or you can search the question again on here and you should find it!

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