exam Maths Puzzle Numerical Ability

1.state in words the rule for this expression at the bottom
E R
7 57
10 75
31 201
3 33
108 663

2. Which number sentence describes this rule?
R=E615 R=(E*6)+

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exam Other Question

Find the sum or difference.

14. 7/15 + 13/15

Any help with this equation would be GREATLY</b> appreciated. Multiply and simplify

y2-x2 . x+y
------- --------
x2+2xy+y2. x-y

the x2 and y2 are xsquared and y squared
thank you