**A plus b plus c if a is to be is 3 c is 4**

To solve the given expression "a + b + c" where a is 3 and c is 4, we need to substitute the values of a and c into the expression and find the sum.

**Step 1: Given Information**
The given information states that a is to be 3 and c is 4. We can write this as:
- a = 3
- c = 4

**Step 2: Substituting the values**
Now, we substitute the given values into the expression "a + b + c":
- a + b + c = 3 + b + 4

**Step 3: Simplifying the expression**
To find the value of "a + b + c", we need to simplify the expression further by combining like terms:
- 3 + b + 4 = 7 + b

**Step 4: Final Answer**
Therefore, the expression "a + b + c" with the given values is equal to "7 + b". As there is no value given for b, we cannot find the exact sum. However, we have simplified the expression as much as possible.

In conclusion, the sum of "a + b + c" with a = 3 and c = 4 is equal to "7 + b", where b is an unknown value.