exam Maths Puzzle Numerical Ability

x/5 - x+2/3 = 1/15

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exam Other Question

2y - 1/6y =


This is from Introduction to College mATHEMATICS BY gARY d jONES AND wADI e mAHFOUD
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