-23z7+(-3a) simplify
1 answer:
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Answer:
28
Step-by-step explanation:
Any whole number can be broken down into its <em>prime factorization</em>, a product of all the prime number factors of a number. We can use a diagram called a <em>factor tree </em>to break numbers down into those factors. I've attached an image with the factor trees of 84 and 56 so you can see this process; 84 breaks down into 2 × 2 × 3 × 7, and 56 is 2 × 2 × 2 × 7. We can find the greatest common factor of these numbers by collecting all the prime factors they have in common and multiplying them together. 84 and 56 have 2, 2, and 7 in common, so their greatest common factor is 2 × 2 × 7 = 28
Answer:
£225
Step-by-step explanation:
[For percentage increase, add the percentage with 100, for percentage decreases substract the percentage from 100.]
100 + 25 = 125%
× 180 = £225