exam Maths Puzzle Numerical Ability

Can someone help me on this?

I need to solve: 7x - 5 = 6x

Thanks,
Lyn

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exam Other Question

Fast Food. If four out of five doctors prefer fast food, then at a convention of 445 doctors, how many prefer fast food? Find the values of x and y in the parallelogram.

one side is 10. one side is x, one side is 12, one side is 3y + 1 and it looks like a square?? i hope this helps