45/51 is 15/17 simplified.
First you divide 45 and 51 by 3 because 3 is the greates common factor. 45 divided by 3 is 15 and 51 divided by 3 is 17 so simplified it is 15/17.
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9 is real answer hope you’re doing great

We know that y=7x, so we just need tu put it into the 1st equation

So we found x. Now we can find y

Answer:
x=1, y=7; or (1;7)
Answer:
x = ± <u>-2</u>
<u>_</u>
3
Step-by-step explanation:
Combine Like Terms - 2x(3x) = 16
Calculate - 6x² = 16
Divide - x² = 8/3
Simplify - x = ± <u>-2</u>
<u>_</u>
3