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\nSolving Simple Equations Using Inspection | Algebra | Maths | FuseSchool\n

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\nIn this video we’re going to look at how we can solve equations using a method called inspection. An equation is a mathematical sentence with two sides that are equal to each other. We solve equations to find the number or numbers that...\nIn this video we’re going to look at how we can solve equations using a method called inspection. An equation is a mathematical sentence with two sides that are equal to each other. We solve equations to find the number or numbers that make the sentence true. x + 3 = 5 is saying “something plus 3 equals 5”. What is the missing number? 2! So x = 2. We have solved the equation by inspection. It just means to look at the question and try and work out the missing number. How can we make the left hand side equal the right hand side? What about this question: 15 + y = 5. What is the missing number? This is a bit of a trick question. 15 plus what gives 5? We actually need to subtract 10. So y = -10. EXAMPLE: 4a = 12. This is saying 4 times a. So what’s the missing number? It must be 3. a = 3. We can still use this same approach for slightly trickier questions. EXAMPLE: 2x - 1 = 5. This is saying something minus 1 equals 5. That something must equal 6. So our unknown 2x equals 6. We can then solve this second bit also just by working it out. Something times 2 equals 6. It must be 3. x = 3. SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here Find all of our Biology videos here Find all of our Maths videos here Twitter Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us Friend us This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org\n
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Grade
12th - Higher Ed
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All Subjects
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Instructional Videos
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Source:
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Date
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2017
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