Answer: 1.) 5(6x)= this is also known as 5 x 6x = 30x
2.) 2x + 5y + 7x = like terms are 2x and 7x so they are both posotive so u add them its is 9x
just so u know 5y u leave out 5y because it has no like term in the4 expression.
final answer= 9x + 5y
3.) 4(2x+5y): u use distributive property so 4(2x) or 4 x 2x = 8x
and 4(5y) or 4 x 5y= 20y
final answer = 8x + 20y