exam Maths Puzzle Numerical Ability

can you help me solve this problem

20 5
+ __ = 1
3x-2 x+4

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exam Other Question

I have the following equation:

X = -((1 + Y)/W) + 1

I am trying to isolate and solve this for W.

Thanks Three friends, Andrew, Bernard, and Claude, leave at the same time and place to go to town, 8 miles away. Andrew starts on foot. Bernard takes Claude in his car. After a certain ti