exam Maths Puzzle Numerical Ability

(1/32)^-3/5

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exam Other Question

Divide

4d exponent 9 m exponent 6 * 10d exponent 9 m exponent 6
__________________________________________________________ 2d exponent 9 m exponent 9
I am having trouble with solving the addition and multipilcation principals for following algebra problem.

18 - 9y - 7y <50

Could someone help.