Question

(1/13-2 3/4)*26 решите плиз

Answer 1

(1/13-2 3/4)*26=-69,5 
1) 1/13-11/4 = - 139/52 
2) -139/52*26= -139/2= -69,5

Answer 2

1/13 - 2 3/4 = 1/13 - 11/4 = -139/52
-139/52 * 26 = -139/2= - 69,5

Answer 3

To solve the expression (1/13 - 2 3/4) * 26, we first need to convert the mixed number 2 3/4 to an improper fraction and then perform the arithmetic.

Step 1: Convert 2 3/4 to an improper fraction. To do this, we multiply the whole number (2) by the denominator of the fraction (4) and then add the numerator (3). This gives us (2 * 4 + 3) / 4 = 11/4.

Step 2: Rewrite the expression with the improper fraction. The expression now becomes: (1/13 - 11/4) * 26.

Step 3: Perform the subtraction. To subtract fractions, we need to find a common denominator, which in this case is 52 (the least common multiple of 13 and 4).

(1/13) - (11/4) = (4/52) - (55/52) = (-51/52).

Step 4: Complete the calculation. Now the expression becomes: (-51/52) * 26.

To multiply a fraction by a whole number, we multiply the numerator by the whole number and leave the denominator unchanged.

(-51/52) * 26 = (-51 * 26) / 52 = -1326 / 52 = -63.

The final result is -63.