exam Maths Puzzle Numerical Ability

please help me solve this equation x+3_>4 and -4x<20

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exam Other Question

how do you get a=1 1/2+(39-1)2 1/4? Analyze the H-Shape
a and b are positive numbers and the angles are all right angles.
1. On the graph paper, draw an H shape in which a = 1cm and b= 2cm
2. Find the perimeter