Question

1)7/9 + 5/6 - 2 7/12 2)28/33 * 45/98 : 2 3/11 3) 5(3 + 2х)-2(12-8х) помогите решить пожалуйста!

Answer 1

1) 7/9+5/6-2 7/12= 28/36+30/36-2 21/36= 58/36-2 21/36= - 35/36
2) 28/33*45/98:2 3/11= 28/33*45/98*11/25= 6/35
3) 5(3+2х)-2(12-8х)= 15+10х-24+16х= 26х-9

Answer 2

Math Problem Solving

1) To solve the expression 7/9 + 5/6 - 2 + 7/12: - First, find a common denominator for the fractions. - Then, perform the addition and subtraction.

The solution is as follows: ``` 7/9 + 5/6 - 2 + 7/12 = (28/36) + (30/36) - 2 + (21/36) (Finding a common denominator of 36) = 79/36 - 2 + 21/36 = (79/36) - (72/36) + 21/36 = 7/36 + 21/36 = 28/36 = 7/9 ```

2) Next, to solve the expression 28/33 * 45/98 ÷ 2 + 3/11: - Perform the multiplication and division first, then the addition.

The solution is as follows: ``` 28/33 * 45/98 ÷ 2 + 3/11 = (28/33 * 45/98) ÷ 2 + 3/11 = (1260/3234) ÷ 2 + 3/11 = 630/3234 + 3/11 = 210/1078 + 3/11 ```

3) Finally, to solve the equation 5(3 + 2x) - 2(12 - 8x): - Apply the distributive property and then simplify the expression.

The solution is as follows: ``` 5(3 + 2x) - 2(12 - 8x) = 15 + 10x - 24 + 16x = -9 + 26x ```

So, the solutions to the given expressions are: 1) 7/9 2) 210/1078 + 3/11 3) -9 + 26x