



 
Hi Geraldine, What you need to use here is the Distributive Rule which says that for any numbers $a, b$ and $c$ \[a ( b + c ) = a \times b + a \times c.\] Thus, for example you can calculate $3 (8  6)$ as $3 (8  6) = 3 \times 2 = 6$ or use the distributive to get \[3(8  6) = (3)(8 + [6]) = (3)\times 8 + (3)\times(6) = (24) + (18) = 6.\] For another example, more like your problem \[5 ( 8  y) = (5) \times 8 + (5) \times (y) = 40 + 5y.\] Now try your example and write back if you still need help,  


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