Question

-0,49+(-13,2+0,49) ; ((2/3)в квадрате +(-6 3/8))+6,375

Answer 1

Думаю я тут все понятно решила и пояснила !на случай чего ,если что-то не понятно можете переспросить рада буду помочь

Answer 2

Let's solve each expression step by step:

1. -0.49 + (-13.2 + 0.49)

Step 1: Calculate the inner parentheses first -0.49 + (-12.71)

Step 2: Add the two numbers inside the parentheses Result = -13.20

2. ((2/3)^2 + (-6 3/8)) + 6.375

Step 1: Calculate (2/3)^2 (2/3)^2 = (2/3) * (2/3) = 4/9

Step 2: Convert -6 3/8 to an improper fraction -6 3/8 = -51/8

Step 3: Add the results from Step 1 and Step 2 (4/9 + -51/8)

Step 4: Find a common denominator for the fractions The common denominator for 9 and 8 is 72.

Step 5: Convert both fractions to have the common denominator (32/72 + -459/72)

Step 6: Add the fractions Result = -427/72

Step 7: Add 6.375 to the result -427/72 + 6.375

Step 8: Convert 6.375 to have the same denominator as the fraction 6.375 = 6 + 3/8 = 48/8 + 3/8 = 51/8

Step 9: Add the two numbers (-427/72 + 51/8)

Step 10: Find a common denominator for the fractions The common denominator for 72 and 8 is 72.

Step 11: Convert both fractions to have the common denominator (-427/72 + 459/72)

Step 12: Add the fractions Result = 32/72 = 4/9

So, the final result is 4/9.