exam Maths Puzzle Numerical Ability

I have a question regarding this problem
Need to write an algebraic expression then simplfy indicating the properties used.
This is the problem:
four times the sum of a and b increased by twice the sum of a and 2b
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exam Other Question
(3x+7)(2x-5) Unable to solve. Please help. Thanks. The additive inverse of a number divided by twelve is the same as one less than three times its reciprocal. Find the numbers.