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Nuetrik [128]
3 years ago
12

Help me plzzzzzz........

Mathematics
2 answers:
artcher [175]3 years ago
7 0

Answer:

Step 1 was the first mistake

Step-by-step explanation:

7a = 28

7a/7 = 28/7

a = 4

Tanya [424]3 years ago
4 0

Answer:

Step 1

Step-by-step explanation:

You should isolate the variable, not try to get rid of it. Also, you have to divide both sides by the same number or variable(can't divide one side by a and the other side by 7- it has to be the same).

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Answer:

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Step-by-step explanation:

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disa [49]

Answer:


Step-by-step explanation:

So,it would be easier to simplify the right equation, so when I say "the right equation", I mean the one I will make right now. It is 8x+9. So the first problem is 8x+9=x+?. Well, if there are no solutions, the slopes have to be the same, and the y-int doesn't matter. So the answer would be + 7x because that will make the x an 8x. If there is one solution, then the slope has to be different. So literally anything but 7x will work. Even constants. If there are infinitely many solutions, then the equations have to be the same. Meaning, you would have to add 7x and 9 to make the left equation the same as the right.

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