Hi,

 7(2+5g)+2(3-g)   |Distributing the 7 and then the 2 to remove the parenthesis

 14 + 35g + 6 - 2g   Note: the variable g is only in two of the terms

 

5(3g+4)-3(2g+5)  |Distributing the 5 and then the -3 to remove the parenthesis

 15g + 20 - 6g - 15  Note: the variable g is only in two of the terms

 

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