(19.31 mL  +  39.111 mL)/  1.32 mL - 0.94 mL   x  1.931 =
                                                   


Let's solve the given expression step by step:

The expression is:

\[
\frac{(19.31 \, \text{mL} + 39.111 \, \text{mL})}{1.32 \, \text{mL}} - 0.94 \, \text{mL} \times 1.931
\]

### Step 1: Simplify the addition in the numerator.
\[
19.31 + 39.111 = 58.421 \, \text{mL}
\]

### Step 2: Divide the sum by the denominator.
\[
\frac{58.421 \, \text{mL}}{1.32 \, \text{mL}} \approx 44.258
\]

### Step 3: Multiply the values in the second term.
\[
0.94 \times 1.931 \approx 1.81514
\]

### Step 4: Subtract the result of Step 3 from the result of Step 2.
\[
44.258 - 1.81514 \approx 42.44286
\]

### Final Answer:
\[
\approx 42.443
\]

Would you like more details or have any questions? Here are some related questions:

1. How do you handle significant figures in mathematical operations?
2. What is the order of operations, and why is it important?
3. Can you explain how to round numbers in mathematical calculations?
4. What is the difference between precision and accuracy in measurements?
5. How would the solution change if the units were different?

**Tip:** Always perform calculations in steps to reduce the chance of errors, especially in complex expressions.

Learn how to solve the arithmetic expression (19.31 mL + 39.111 mL) / 1.32 mL - 0.94 mL * 1.931 step-by-step. This problem covers basic arithmetic operations, including addition, division, subtraction, and multiplication. Suitable for general mathematics learners.

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