exam Maths Puzzle Numerical Ability

k(-2,-8)
y(8,3)
ky

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exam Other Question

Write the equation of each hyperbola in standard form.

4. 25x2- 4y2 + 100x + 24y - 36 =0

Then I added 36 to both sides.

4. 25x2 - 4y2 + 100x + 24y = -36

That's as far a Can someone help me on this problem?

I need to solve:
3x/7 - 5x/3 = 2/21

Thanks,
Sher