exam Maths Puzzle Numerical Ability

SOLVE EACH LITERAL EQUATION FOR THE INDICATED VARABLE

A = 1/2h(B + b) (for b) Area of a trapezoid

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exam Other Question

2X-1/X+2 = 4/5

THATS SUPPOSED TO BE 2X-1 OVER X+2 = 4 OVER 5
Ok this is my 4th and final question of the day. you guys are awesome to spend your time helping non math minded people like myself:)

solve the equation:
x+6/3=x+6/x