book Maths Puzzle Numerical Ability

/2x-1/=11

-4/x+1/=-20

/3x-9/>3 graph

-3+/x-1/<=-1 graph
help please

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book Other Question

ive got a bar graph with pounds on the side and years on the bottom... how do i work out the percentage? write an equation of the line in slope y-intercept form of the line that passes through (0,3) and(-2,0)