book Maths Puzzle Numerical Ability

HI i am trying to find out what the slopes are for these two inequalities 3x<-6 , 3m-18>-6

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book Other Question

Please help me to understand this expression

[7(x-5)-19]-[4(x-6+10] how do you solve this problem : 2e and then in the exponent log base 3 (x +2) = 14?