Question

42,6•1/2-2,6•1/2 сколько будет?

Answer 1

1/2= 0,5

42,6*0,5=21,3

2,6*0,5=1,3

21,3-1,3=20

Answer 2

To solve this expression, we can use the order of operations, which is commonly remembered using the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Using this order, we first simplify the multiplication of each term by 1/2:

42,6•1/2 = 21,3

2,6•1/2 = 1,3

Now we substitute these values back into the original expression:

42,6•1/2 - 2,6•1/2 = 21,3 - 1,3

= 20

Therefore, the answer is 20.