exam Maths Puzzle Numerical Ability

Please help me solve:

|7x - 2| > -8

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exam Other Question

Add or subtract as indicated. Be sure to simply completely.

2/5w+10 minus 3/2w-4

I do not know how to get the denominators to become the same. I am begging someone for help, please!
log3</sub>4xlog3</sub>4x</sup> = 5