Answer:
14
Step-by-step explanation:
Let's simplify a+3(b+c).
a + 3b + 3c.
We know that c = 3 so 3c will turn into 9.
3 x 3 = 9
Remove 3c and add 9 to the expression.
a + 3b + 9.
In the first equation, it says a + 3b = 5.
In the expression we are trying to solve, there is an " a + 3b " so you can convert that into 5
Remove a +3b and add 5 to the expression.
5 + 9
Now we can solve the expression.
5 + 9 = 14
