book Maths Puzzle Numerical Ability

my question is what is 3(m-2)-12m=4(2m=7)? if you get the answer please give it to me step by step because this is an question i don't have any idea about!! thank you so much for y

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Tell whether the line that passes through the two given points is parallel or perpendicular (or neither) to a line with a slope of -2.

(4,3) (6,1)
(4,3) (6,4)
(4,3) (6,3) triplin the greater of two consecutive even integers gives the same result as subtracting 10 fom the lesser even integer. what are th integers?