Question

42 7/10 × 8 1/2 - 4 27/ 100 × 85 = ?​

Answer 1

(8 1/2)*(42 7/10)-(4 27/100)*85=7259/20-7259/20=0

Answer 2

To solve the expression, we'll follow the order of operations (also known as PEMDAS/BODMAS). Let's break down the expression step by step:

1. Convert mixed numbers to improper fractions: 42 7/10 = (42 × 10 + 7) / 10 = 427/10 8 1/2 = (8 × 2 + 1) / 2 = 17/2 4 27/100 = (4 × 100 + 27) / 100 = 427/100

2. Perform the multiplications: 427/10 × 17/2 = (427 × 17) / (10 × 2) = 7279/20

   427/100 × 85 = (427 × 85) / 100 = 36295/100

3. Perform the subtractions: 7279/20 - 36295/100

To subtract fractions, we need a common denominator. In this case, the least common multiple (LCM) of 20 and 100 is 100.

4. Adjust the fractions to have a common denominator: 7279/20 - 36295/100 = (7279 × 5) / (20 × 5) - 36295/100 = 36395/100 - 36295/100

5. Subtract the fractions: 36395/100 - 36295/100 = (36395 - 36295) / 100 = 100/100 = 1

Therefore, 42 7/10 × 8 1/2 - 4 27/100 × 85 equals 1.