exam Maths Puzzle Numerical Ability

The problem I have is what to do with an absolute value cubed and in brackets. Example:

-6(24-9 X /2-10/^3) the 2-10^3 should be in the absolute bracket lines but my computer

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exam Other Question

Write a proportion that is equivalent to the statement: If 3 gallons of gasoline cost $5.37, then 8 gallons will cost $14.32. Please help me with these equations: X+2y=5, 3x-y=1, 3x+y+4, x+3y=-4 thank you so much..