exam Maths Puzzle Numerical Ability

Please help me solve this problem:
Simplify by removing factors of 1
4x-4/4x

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exam Other Question

this is a type of problem i was unable to solve. i was given the perimeter of a scalene triangle which was 1000m and asked to find its area. please can you help me solve this problem.thanks. Translate to an algebra statement; do not solve:

Seven times the difference of six and twice a number yields the same result as the same number decreased by one.