exam Maths Puzzle Numerical Ability

kindly help me with these problems. please answer these and show the solutions. thank you

1. x/77x-121y - y/49x-77y

2. a/6a-9b - b/4a-6b

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exam Other Question

Solve

(x-5)^2=7

thanks
*Tutors could you help with this problem, it is: Use long division to find the quotient Q(x) and the remainder R(x) when P(x) is divided by d(x)

P(x)=x^4+2x^3-2x+4
d(x)=x-2