Question

"(10*0,9-0,9*8)+(8*0,8-0,8*6)+(6*0,7-0,7*4)+(4*0,6-0,6*2)"

Answer 1

(9-7,2)+(6,4-4,8)+(4,2-2,8)+(2,4-1,2)=1,8+1,6+1,4+1,2=6

Answer 2

To solve the given expression, we need to apply the order of operations (PEMDAS):

P: Parentheses first E: Exponents (ie Powers and Square Roots, etc.) MD: Multiplication and Division (left-to-right) AS: Addition and Subtraction (left-to-right)

Using this order, we can simplify the expression as follows:

(100.9 - 0.98) + (80.8 - 0.86) + (60.7 - 0.74) + (40.6 - 0.62)

= (9 - 7.2) + (6.4 - 4.8) + (4.2 - 2.8) + (2.4 - 1.2) //performing the multiplication

= 1.8 + 1.6 + 1.4 + 1.2 //simplifying the subtraction

= 6

Therefore, the value of the given expression is 6.