Expanding/Removing the brackets

 

https://images.app.goo.gl/PNp4SjayCsJHZQWq7


Example: 4(y + 5)     

(4 multiple with each term in the bracket)

Meaning: 4(y) {4 multiply (y)}  and 

                 :4(5)   { 4 multiply (5)}

       :4(y) + 4(5)

                  : 4y + 20


Example: 3b + 2(2 +b)

 {use the number and sign infront of the bracket to expand out }

 Meaning: 3b + 2(2) {the +2 multiply (2)} + 2(b) {the +2 multiply (b)}

                  :3b  + 2(2) + 2(b)

                  : 3b + 4 - 2b    { collect the like terms}

                  : 3b - 2b + 4   {3b and -2b are like terms}

                  : b + 4



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