Question 346969
3(2x-5y)+2(5x+3y)

Multiply 3 by each term inside the parentheses.
6x-15y+2(5x+3y)

Multiply 2 by each term inside the parentheses.
6x-15y+10x+6y

Since 6x and 10x are like terms, add 10x to 6x to get 16x.
16x-15y+6y

Since -15y and 6y are like terms, subtract 6y from -15y to get -9y.
16x-9y