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5(2c - 3) = 19
5x2c - 5x3 = 19
10c - 15 = 19
10c = 19 + 15
10c = 34
c = 34/10 = 3.4
Pythagoras' Theorem: a2 + b2 = c2 where a, b, c relate to the sides of a right-angled triangle, and c is the hypoteneuse.
Use the equation to find the length on...
x =3 or x= -3
First, I would make sure the pupil understands why rationalising fractions is necessary. Then I would acquaint them with the relevant vocabulary so they can express their thought process better...
A fraction a/b consists of a numerator (the part above the bar, a in this example) and a denominator (the part below the bar, b here). In order to add or subtract fractions, we need to make sure the denom...
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