exam Maths Puzzle Numerical Ability

Subtracting fractions. Write each result in simplest form.
(8/9)-(3/9)=

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exam Other Question

Please help, using the model c(x)=1.3x/100-x adding millions of dollars to the value,determine the cost if 40% of the citizens participate? Include units round to the nearest whole Determine which two equations represent perpendicular lines.
(a) y = 6x - 6 (b) y = 1/6 x + 6
(c) y = -1/6 x + 6
(d) y =1/6 x - 6