Book Maths Puzzle Algebra

how do i solve the equation
|2x+3|=7 ?

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Book Other Question

how do i solve the compound inequality and sketch the solution on the real number line?
-13_<3-4x,13 reena wants to fence part of her fromt yardfor a flower bed. What is the maximim area she can enclose with 30 m of fencing?

Im never sure how to answer these typoes of questions