What is the essential rule for algebraic equations?

Always do the same to both sides of the equation

If you minus from one side, you add to the other

How would you work out 4y+2=2y+8

(-2y) 2y+2=8 (-2) 2y = 6 (divide by 2) y = 3

(-2) 4y = 2y+6 (-6) 4y - 6 = 2y (-4y) -6 = -2y (+6) 0 = -2y+6 (+2y) 2y = 6 (divide by 2) y = 3

Quiz

Ellen Billingham 5 perguntas

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1What is the first thing you do to a linear equation with an x on both sides?
1. AGet rid of the smaller x
2. BAdd them together
2What is the essential rule for algebraic equations?
1. AIf you minus from one side, you add to the other
2. BAlways do the same to both sides of the equation
3How would you work out 4y+2=2y+8
1. A(-2y) 2y+2=8
  (-2) 2y = 6
  (divide by 2) y = 3
2. B(-2) 4y = 2y+6
  (-6) 4y - 6 = 2y
  (-4y) -6 = -2y
  (+6) 0 = -2y+6
  (+2y) 2y = 6
  (divide by 2) y = 3
4What does n equal in this equation?
5n - 2 = n + 46
1. An = 12
2. Bn = 48
5What does 3(y + 2) mean?
1. A3y + 2
2. B3y + 6

Descrição: GCSE Maths (Year 8 Algebra 3) Quiz sobre Linear Equations with unknowns on Both Sides, criado por Ellen Billingham em 07-05-2013.
Autor: Ellen Billingham
Idioma: English
Visualizações: 124
Etiquetas: maths year 8 algebra 3 maths year 8 algebra 3 gcse
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