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The product of the inside (3 and 5) and the product of the outside (2X+1 and 9) are equal to each other. Therefore 18X+9 = 15. Therefore 18X =6 and if we divide both sides by 18, we get X=1/3.

Evolution is the gradual change in the alleles of a species over time to make it more suited to its environment. Natural selection is when certain members of a population have an advantageous allele making t...

Rationalism refers to a school of thought which prioritises reason as the main source of knowledge. It hold the belief that we can know things about the world through reasoning alone, without any physical, m...

So the most important thing to start with is your argument, as this will form the skeleton/ base for your answer. You must always stay focused to the argument and not stray from it, so I would always write t...

2y + x = 8 (equation 1) and 1 + y = 2x (equation 2) Step 1: make y subject of equation 2: y = 2x - 1 Step 2: sub this value of y into equation 1: 2(2x - 1) + x = 8 Step 3: solve the above equation to find x:...