Question

Решите - (7,7x + 2,2) - (5,5x - 9,9x) = 1,1

Answer 1

- 7.7 x + 2.2 - 5.5 x + 9.9 x = 1.1

(-7.7 - 5.5 +9.9) x +2.2 = 1.1

-3.3 x = 1.1 -2.2

-3.3 x = -1.1

       x= -1.1 : (-3.3)

       x = 11/33

       x = 1/3

Answer 2

To solve the equation, let's first simplify the expression step by step:

(7 - 7x + 2) - (5x - 9x) = 1.1

Combine like terms within parentheses:

(9 - 7x) - (-4x) = 1.1

Remove parentheses:

9 - 7x + 4x = 1.1

Combine like terms:

9 - 3x = 1.1

Now, let's isolate the variable x by moving all the constant terms to the other side:

-3x = 1.1 - 9

-3x = -7.9

Finally, divide both sides by -3 to solve for x:

x = -7.9 / -3

x = 2.633333...

Rounded to a few decimal places, x ≈ 2.63