To solve the expression 2*(3)(5+2)-1, we need to follow the order of operations, also known as PEMDAS:
1. Evaluate the expression inside the parentheses: (5+2) = 7.
2. Multiply 3 and 7: 3*7 = 21.
3. Multiply 2 and 21: 2*21 = 42.
4. Subtract 1 from 42: 42-1 = 41.
Therefore, the value of the expression 2*(3)(5+2)-1 is 41.