exam Maths Puzzle Numerical Ability

I would really appreciate it if you could help me out with this problem.

{{{ log( 7, (3x+4)) }}} = {{{ log( 7, (2+2)) }}}

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exam Other Question

I am struggling with this word problem, I would like some help on how to complete these type of problems. Here is the problem: If 4 times an interger is increased by 3, the result is between 13 and 25. What is the interger? Please help me. Thank you Useing the PEMEDS expesssion, (Please, excuse, my dear, aunt sally)

Simplify

1. 2+3*5^2-7

2. 6+3[(12/4)+5]

3. (4/2)+4(5-2)^2

4. -8-81/9*2^2+7