3(2m-5)=3• 2m-3•5=6m-15
5(9+x)=5•9+5x=45+5x
2а(6а•3-3)=2a•(18a-3)=36a²-6a
5х+ 6х•2+6х+4х•2=5х+12х+6х+8х=31х
3(2m-5)=3• 2m-3•5=6m-15
5(9+x)=5•9+5x=45+5x
2а(6а•3-3)=2a•(18a-3)=36a²-6a
5х+ 6х•2+6х+4х•2=5х+12х+6х+8х=31х