exam Maths Puzzle Numerical Ability

5+4(2-6)-10+3=

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exam Other Question

Solve the inequality

-t/2 > -15

Any help would be greatly aprreciated ;) can u please solve this for me.
the sum of the digit of a two digit number is 11. when the digit are reversed, the new number is increased by 20 which is twice the original number. find the original number?