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This is a simple simultaneous equationFirst we multiply the second equation by 3 to get 6X - 3Y = 30Then we add the first and second equation together to get 6X + X +3Y - 3Y = 30 + 19which we simply to 7X = ...

One nifty way of approaching this board topic is by focusing on how the speaker narrates by examining their writing style. An interesting line of enquiry is asking yourself: are the sentences they use simple...

We start by multiplying both sides of the equation by (4 -a). We then expand the brackets "p.(4-a)" and end up with "4p - pa". We then gather the "a's" to one side of the equati...

firstly, macerate the fruit and add a few drops of clear blue Benedict's solution place in a hot waterbath to heat mixture for 5 minutesif glucose is present, the solution will turn from blue to a brick red ...

First, take the 2x and multiply each term in the second bracket by it to give 2x.3x=6x 2 and 2x.-3= -6x. Then multiply each term of the second bracket by +3 to give 3.3x= 9x and 3.-3=-9 . adding all the term...