46−(98+3a)−(27b:a3b−7)=?
To solve this problem, we'll follow these steps:
- Step 1: Simplify the expression inside the first parentheses: 98+3a.
- Step 2: Simplify the expression inside the second parentheses, particularly the term 27b:a3b−7.
- Step 3: Substitute simplified expressions back into the original expression.
- Step 4: Perform the necessary calculations to reach a simplified final expression.
Now, let's work through each step:
Step 1: Simplify 98+3a. This remains as is within its parentheses.
Step 2: Simplify the term 27b:a3b−7.
The fraction 27b:a3b=27b×3ba=9a (assuming b=0).
The expression inside becomes 9a−7.
Step 3: Substitute back:
The original expression is now:
46−(98+3a)−(9a−7).
Step 4: Simplify:
First, distribute the subtraction across both terms inside their parentheses:
46−98−3a−9a+7.
Combine like terms by performing arithmetic operations:
46−98+7−3a−9a=(46+7−98)−(3a+9a).
This simplifies to −45−12a.
Therefore, the solution to the problem is −45−12a.