exam Maths Puzzle Numerical Ability

4x+1=25

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exam Other Question

The distance from A to B is 143mi., and from B to C on another road, 57 mi. The distance from A to D is 143mi., and from D to E on another road is 57 mi. Compare the distance from 3(3s+7)=-(8-s) can you show me how to check it