N+3 evaluates to N+3
Multiply 10 by N+3
Multiply 10 by each term in N+3 term by term.
This is the distributive property of multiplication.
Multiply 10 and N
Multiply 1 and N
The N just gets copied along.
10 × N = 10N
Multiply 10 and 3
10 × 3 = 30
10*(N+3) evaluates to 10N+30
***The final answer is 10N+30***