exam Maths Puzzle Numerical Ability

Solve.

x-5/x+4 = 4/7

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exam Other Question

I have to graph these equations.I have to linear and non linear equation.

1.y=5x^-2

2.3x-1=5x-y

3.y=|x|+3

4.x+2=2x-1 Rational Expression:

3/10 = 5/x