book Maths Puzzle Numerical Ability

Write these four values form lowest to highest. -3, 3 1/2, 3.2, -5

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book Other Question

Find the measures of the angles of an isosceles triangle if the measure of the vertex angle is 40 degrees less than the sum of the measures of the base angles Please solve with work: 3/8=x+1/4

the x+1 is over top of the 4. Like a fraction or maybe it means division. I really need help with this problem. With work because then that way I can use the formula for all the other ones. Thanks so much....