Question

Answer 1

 

a) 5,3 – (-5,1) + (-5 ,3) + 4,9

= 5,3 + 5,1 – 5,3 + 4,9

= (5,3 – 5,3) + (5,1 + 4,9)

= 0 + 10

= 10

b,-2/5.3/8+-2/5.5/8

=-2/5.(3/8+5/8)

=-2/5.1

+-2/5

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