exam Maths Puzzle Numerical Ability

Solve the equation




A = 1/2(b + B) for B


Totally lost on this problem. Can someone help me please.

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exam Other Question
(4h^5k-6h^2k^2)/(-2h^2k. Find the quotient. express the following equation in the form Y= mx+b

a. 2y= 6x+8