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Form 3 equations. Equation 1: A= 6+ B.Equation 2 : C= A-1. Equation 3: A+ B+ C= 71.Substitute equation 1 and 2 into 3 to get: 6+ B + B + A - 1= 71 -> 2B + A= 66 which is equation 4. Then, substitute eq...

There are two main methods:Substitution and elimination which can be demonstrated on the white board.

4x-2=6x+3 (-4x)-2=2x+3 (-3)-5=2x (/2)-2.5=x

Find 30 and 60 as products of their prime factors using factor trees: 60 = 2 x 2 x 3 x 5, 30 = 2 x 3 x 5. Use a Venn diagram to represent the prime factors of 30 and 60 with the groups 'prime factors of 3...

Remember you can never be marked down for what you right. Time is of the essence so skip the question and come back to it. You need to identify the topic of the question and you should do everything you ...