Question

7/8×(-4,5)×(1 1/7)×0,4

Answer 1

$1) \frac{7}{8} *(- \frac{45}{10} )=- \frac{7}{8} * \frac{9}{2} =- \frac{63}{16} \\ 2)- \frac{63}{16} *1 \frac{1}{7}=- \frac{63}{16} *\frac{8}{7}= -\frac{9}{2} \\ 3)- \frac{9}{2} * \frac{4}{10} = -9 * \frac{1}{5} =- \frac{9}{5} =-1 \frac{4}{5}$

Answer 2

7/8×(-4,5)×(1 1/7)×0,4=7/8*(-9/2)*11/7*2/5=(-9/2*2/5)*(7/8*11/7)= -1,8*1,375=-2,475

Answer 3

To calculate the expression, follow the order of operations (PEMDAS/BODMAS) which stands for Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right):

1. Calculate inside the parentheses first: (1 1/7) = 1 + 1/7 = 8/7

2. Now multiply the numbers in the following order: 7/8 × (-4.5) × (8/7) × 0.4

3. Perform the multiplications: 7/8 × (-4.5) = -31.5/8 (-31.5/8) × (8/7) = -31.5/7 (-31.5/7) × 0.4 = -12.6

So, 7/8 × (-4.5) × (1 1/7) × 0.4 = -12.6