Question

11,2*(-2/7)+13:5-6 2/5

Answer 1

11.2×(-2/7)=11 1/5×(-2/7)=56/5×(-2/7)=-16/5
13÷5=13/5
-16/5+13/5=-3/5
-3/5-6 2/5=-6 5/5=-7

Answer 2

To solve the expression 11.2*(-2/7) + 13:5 - 6 2/5, let's break it down step by step:

Step 1: Calculate -2/7 -2/7 is equal to approximately -0.2857 when rounded to four decimal places.

Step 2: Multiply 11.2 by -0.2857 11.2 * (-0.2857) equals approximately -3.2 when rounded to one decimal place.

Step 3: Divide 13 by 5 13 divided by 5 is equal to 2.6.

Step 4: Subtract 6 2/5 from 2.6 To subtract mixed numbers, we need to convert 6 2/5 into an improper fraction: 6 2/5 = (6 * 5 + 2)/5 = 32/5

Now, subtract 32/5 from 2.6: 2.6 - (32/5) = 2.6 - 6.4 = -3.8

Step 5: Add the results from step 2 and step 4 -3.2 + (-3.8) = -7

Therefore, the value of the expression 11.2*(-2/7) + 13:5 - 6 2/5 is -7.