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3 years ago

Please help please!!!!!!!!!!

Mathematics

1 answer:

nydimaria [60]3 years ago

7 0

Answer:

The x coordinate would be 4.

Step-by-step explanation:

In order to find this, we'll make the y terms cancel. To do this, we need to multiply the whole second term by -1 and then add them together.

3x + 5y = 10

-x - 5y = -2

-----------------

2x = 8

Now that we have this, we can divide to get the answer.

2x = 8

x = 4

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1. No.

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Step-by-step explanation:

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$8(5x - 3) = 6(-3x - 4); \\ 8 * 5x - 8 * 3 = 6 * (-3x) - 6 * 4; \\ 40x - 24 = -18x - 24; \\ 40x + 18x = -24 + 24; \\ 58x = 0; \\ x = 0.$

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$3x - 13 = 7(x + 2) - 4(x - 7); \\ 3x - 13 = 7x + 7 * 2 - 4x - 4 * (-7); \\ 3x - 13 = 7x + 14 - 4x + 28; \\ 7x - 4x - 3x = -13 - 14 - 28;\\ 0x = 55; \\ x \in \emptyset.$

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